Kamal, S. M., Ashrafi, S., Sultana, S., Rashid, M.A., Ahsan, Masud, M.M. and Haque, M.R. : Isolation and Characterization of Polyprenols from Litsea monopetala (Roxb.) Pers., Dhaka University Journal of Pharmaceutical Sciences , vol.23 , no.1 Faculty of Pharmacy, University of Dhaka , pp.63-68 , 2024 .

Kamal, S. M., Ashrafi, S., Sultana, S. and Haque, M.R. : In vitro screening of Litsea monopetala (Roxb.) Pers. (Lauraceae) extract: potential antioxidant, cytotoxic, thrombolytic, and anti-inflammatory properties., Journal of Biosciences and Experimental Pharmacology , vol.1 Dr. Nusrat Subhan and Son’s Science Publisher , pp.25-38 , 2023 .

Akhtar, T., Sikder, M.A.A., Yeasmin, T. Mamun, M.A.A., Hoq, M.M., Rahman, M.M., Mazid, M.A. and Haque, M.R. : Isolation and Characterization of Alkaline Proteases Producing Indigenous Bacillus sp. as a Source of Thrombolytic and Fibrinolytic Agents., Dhaka University Journal of Pharmaceutical Sciences , vol.22 , no.2 Faculty of Pharmacy, University of Dhaka , pp.125-135 , 2023 .

Rashid, P.T., Hossain, M.J., Zahan, M.S., Hasan, C.M., Rashid, M.A., Al-Mansur, M.A. and Haque, M.R. : Chemico-pharmacological and computational studies of Ophiorrhiza fasciculata D. Don and Psychotria silhetensis Hook. f. focusing cytotoxic, thrombolytic, anti-inflammatory, antioxidant, and antibacterial properties., Heliyon , vol.9 Elsevier Ltd , pp.e20100. , 2023 .

Bulbul, I.J., Rashid, M.A. and Haque, M.R. : Analgesic Activity of Methanolic Extract of Litsea deccanensis Gamble Bark in Mice Model. , 26(2),, Bangladesh Pharmaceutical Journal , vol.26 , no.2 Bangladesh Pharmaceutical Society , pp.144-149 , 2023 .

Rana, M.S., Rahim, M.A., Mosharraf, M.P., Tipu, M.F.K., Chowdhury, J.A., Shaila, Kabir, S., Amran, M.S., Chowdhury, A.A. and Haque, M.R. : Morphological, Spectroscopic and Thermal Analysis of Cellulose Nanocrystals Extracted from Waste Jute Fiber by Acid Hydrolysis., Polymers , vol.15 MDPI , pp.1530 , 2023 .

Hasan, M.A., Kuddus, M.R, Rashid, M.A. and Haque, M.R. : Phytochemical and in vivo biological studies of Tanaecium Bilabiatum (Sprague) L.G. Lohmann., Bangladesh Journal of Botany , vol.52 , no.1 Bangladesh Botanical Society , pp.119-127 , 2023 .

Alam, S., Dhar, A., Hasan, M., Richi, F.T., Emon, N.U., Aziz, M.A., Mamun, A.A., Chowdhury, M.N.R., Hossain, M.J., Kim, J.K., Kim, B., Hasib, M.S., Zihad, S.M.N.K., Mohamed, I.N., Rashid, M.A. and Haque, M.R., : Antidiabetic Potential of Commonly Available Fruit Plants in Bangladesh: Updates on Prospective Phytochemicals and Their Reported MoAs., Molecules , vol.27 MDPI , pp.8709 , 2022 .

Rana, R.H., Rana, M.S., Tasnim, S., Kabir, S., Amran, M.S., Chowdhury, A.A. and Haque, M.R. : Characterization and tableting properties of microcrystalline cellulose derived from waste paper via hydrothermal method., Journal of Applied Pharmaceutical Science , vol.12 , no.6 Open Science Publishers LLP , pp.140-147 , 2022 .

Jannat, T., Hossain, M.J., El-Shehawi, A.M., Kuddus, M.R., Rashid, M.A., Albogami, S., Jafri, I., El-Shazly, M. and Haque, M.R. : Chemical and Pharmacological Profiling of Wrightia coccinea (Roxb. Ex Hornem.) Sims Focusing Antioxidant, Cytotoxic, Antidiarrheal, Hypoglycemic, and Analgesic Properties., Molecules , vol.27 , no.13 MDPI , pp.4024 , 2022 .

Anjum, N., Hossain, M.J., Aktar, F., , Rashid, M.A., Kuddus, M.R. and Haque, M.R. : Potential In Vitro and In Vivo Bioactivities of Schleichera oleosa (Lour.) Oken: A Traditionally Important Medicinal Plant of Bangladesh., Research Journal of Pharmacy and Technology , vol.15 , no.1 A and V Publication , pp.113-121. , 2022 .

Bulbul, I.J., Uddin, M.E. Nahar, N., Kuddus, M.R., Rashid, M.A. and Haque, M.R. : Antidiarrheal Activity of Four Different Species of Litsea Available in Bangladesh., Biomedical & Pharmacology Journal , vol.14 , no.3 Oriental Scientific Publishing Company , pp.1259-1266 , 2021 .

Alam, S., Emon, N.U., Hasib, M.S., Rashid, M.A., M.A. Soma, Saha, T. and Haque, M.R. : Computer-aided Approaches to Support the Ethnopharmacological Importance of Dillenia pentagyna Roxb.: An In silico Study., Bangladesh Pharmaceutical Journal , vol.24 , no.2 Bangladesh Pharmaceutical Society , pp.125-132 , 2021 .

Alam, S., Rashid, M.A., Sarker, M.M.R., Emon, N.U., Arman, M., Mohamed, I.N. and Haque, M.R. : Antidiarrheal, antimicrobial and antioxidant potentials of methanol extract of Colocasia gigantea Hook. f. leaves: evidenced from in vivo and in vitro studies along with computer-aided approaches., BMC Complementary Medicine and Therapies , vol.21 , no.1 Springer Nature , pp.119 , 2021 .

Anjum, N., Hossain, M.J., , Chowdhury, A., Rashid, M.A., Kuddus, M.R. and Haque, M.R. : Phytochemical Investigation of Schleichera oleosa (Lour.) Oken Leaf., Bangladesh Pharmaceutical Journal , vol.24 , no.1 Bangladesh Pharmaceutical Society , pp.33-36 , 2021 .

Akther, A., Rashid, M.A. and Khan, M.W. and Haque, M.R., : In vitro Antimicrobial Activity of Some Synthetic Indolium Chloride Derivatives., Dhaka University Journal of Pharmaceutical Sciences , vol.19 , no.2 Faculty of Pharmacy, University of Dhaka, Bangladesh , pp.133-137 , 2020 .

Alam, S, Emon, N.U., Shahriar, S., Richi, F.T., Islam, M.N., Sakib, S.A. and Ganguly, A. and Haque, M.R. : Pharmacological and computer-aided studies provide new insights on Millettia peguensis Ali (Fabaceae)., Saudi Pharmaceutical Journal , vol.28 Elsevier B.V , pp.1777–1790 , 2020 .

Haque, M.R. and Islam, M. and Kuddus, M.R. : In vitro and in vivo evaluation of pharmacological potential of Begonia barbata Wall., Future Journal of Pharmaceutical Sciences , vol.6 Springer , pp.112 , 2020 .

Islam, M., Kuddus, M.R., Rashid, M.A. and Haque, M.R. : Phytochemical Investigations of Campsis Radicans L., Journal of Applied Pharmaceutical Research , vol.8 , no.3 Creative Pharma Assent , pp.55-59. , 2020 .

Bulbul, I.J., Rashid, M.A. and Haque, M.R. : Pharmacological Investigations of Litsea lancifolia (Roxb.) Hook. F., Bangladesh Journal of Botany , vol.49 , no.1 Bangladesh Botanical Society , pp.179-183 , 2020 .

Haque, M.R. and Bulbul, I.J., Rashid, M.A. : Pharmacological Studies of Different Fractions of Litsea monopetala Roxb, Bangladesh Pharmaceutical Journal , vol.23 , no.1 Bangladesh Pharmaceutical Society , pp.61-64 , 2020 .

Islam, M., Jannat, T., Kuddus, M.R., Rashid, M.A. and Haque, M.R : In vitro and in vivo evaluation of pharmacological potentials of Campsis radicans L, Clinical Phytoscience , vol.5 Springer Nature , pp.42 , 2019 .

Haque, M.R. and Bulbul, I.J., Joty, U.S., Ahamed, R., Rashid, M.A. : Hypoglycemic and Hypolipidemic Activities of Psychotria sylhetensis Hook in Alloxan-induced Type 2 Diabetic Rats, Bangladesh Pharmaceutical Journal , vol.22 , no.1 Bangladesh Pharmaceutical Society , pp.41-44 , 2019 .

Haque, M.R. and Moniruzzaman, M., Kuddus, M.R., Chowdhury, A.M.S., Rashid, M.A : Stereospermum suaveolens (Roxb.) DC. Shows Potential in vivo and in vitro Bioactivities, University Journal of Pharmaceutical Sciences , pp.17(2), 257-263 , 2018 .

Haque, M.R. and Jahan, N., Subrin, S. : In vitro Study of Different Partitionates of Alstonia scholaris (L.) R.Br. Leaf for Thrombolytic and Membrane Stabilizing Activities, Bangladesh Pharmaceutical Journal , pp.21(2), 145-149. , 2018 .

Haque M.R. and Rahman A., Rashid M.A. : Enantioselective Quantitation of Ofloxacin and Levofloxacin by a Developed and Validated Chiral HPLC Method., Ewemen Journal of Analytical & Environmental Chemistry , pp.4(2), 173-179 , 2018 .

Haque M.R. and Rahman A., Rashid M.A. : Simultaneous Determination of Propranolol by a Developed and Validated Chiral HPLC Method, Ewemen Journal of Analytical & Environmental Chemistry , pp.4(1), 166-172 , 2018 .

Haque, M.R., and Rahman, A, Sultan, M.Z., Rahman, M.M., Rashid, M.A : Enantiomeric Determination of Omeprazole and Esomeprazole by a Developed and Validated Chiral HPLC Method and Stability Studies by Microthermal Analysis, Dhaka University Journal of Pharmaceutical Sciences , pp.16(2), 221-233 , 2017 .

Haque, M.R. and Rahman, A, , Rahman, M.M., Rashid, M.A. : Development and Validation of a Chiral HPLC Method for Quantitative Analysis of Enantiomeric Escitalopram, Dhaka University Journal of Pharmaceutical Sciences , pp.16(2), 165-172 , 2017 .

Haque, M.R. and Bulbul, I.J., Fashiuddin, S.B.,, Sultan, M.Z. Rashid, M.A. : Anti-nociceptive and Anti-inflammatory Activities of Crotalaria pallida Aiton (Fam: Fabaceae) Leaves, Bangladesh Pharmaceutical Journal , pp.20(2), 165-171 , 2017 .

Haque, M.R. and Faruq, A.A., Chowdhury, M.M., Ibrahim, M., Rashid, M.A : Pharmacological and Biological Activities of Different Fractional Extracts of Gardenia coronaria Buch.-Ham. Leaves, Bangladesh Pharmaceutical Journal , pp.20(2), 139-147 , 2017 .

Haque, M.R. and Hossen, F., Ahasan, R., Begum, B., Hasan, C.M. : Crispene A, B, C and D, four new clerodane type furanoid diterpenes from Tinospora crispa (L.), Pharmacognosy Magazine , pp.12 (45), S37-S41 , 2016 .

Haque, M.R. and Mehedi, M.S.A., Hasan, C.M. : Isolation of flavonoids from the bark of Entada rheedii Spreng., Oriental Pharmacy and Experimental Medicine , pp.15, 347-351 , 2015 .

Haque, M.R. and Sufian, M.A. : Cytotoxic, thrombolytic, membrane stabilizing and anti-oxidant activities of Hygrophila schulli., Bangladesh Journal of Pharmacology , pp.10(3), 692-696 , 2015 .

Haque, M.R. and Kabir, S., Zahan, R., Chowdhury, A.M.S., Rashid, M.A. : Antitumor, Analgesic and Anti-inflammatory Activities of Glochidion multiloculare (Rottler ex Willd) Voigt., Bangladesh Pharmaceutical Journal , pp.18(2), 142 – 148 , 2015 .

Haque, M.R. and Sufian, M.A., Mehedi, M.S.A., Rashid, M.A. : Biological Investigation of Entada rheedii Spreng. and Isolation of Entadamide A from its seed, International Research Journal of Pharmacy , pp.6(7), 411-414 , 2015 .

Haque, M.R. and Tahia, F., Sikder, M.A.A., Shilpi, J.A., Awang, K., Al-Mansur M.A., Rashid, M.A. : Alkaloids, Coumarin and Cinnamic acid Derivative from Murraya koenigii (Linn.) Spreng., Alkaloids, Coumarin and Cinnamic acid Derivative from Murraya koenigii (Linn.) Spreng. , pp.14(1), 29–33 , 2015 .

Haque, M.R. and Hossain, M.J., Sikder, M.A.A., Kaisar, M.A., , Chowdhury, A.A., Rashid, M.A. : Phytochemical and Biological Investigations of Methanol Extract of Leaves of Ziziphus mauritiana Lam., Bol. Latinoam. Caribe. Plant Med. Aromat , pp.14(3), 179–189 , 2015 .

Haque, M.R. and Sufian, M.A., Begum, F., , Hasan, C.M., Rashid, M.A. : Sterol and Triterpenoids from Hygrophila Schulli Buch.-Ham., Bangladesh Journal of Botany , pp.44(2), 319-321 , 2015 .

Haque, M.R. and Begum, F., Nahar, K.S. and Rashid, M.A. : Secondary Metabolites From Different Extractives of Stereospermum suaveolens., Secondary Metabolites From Different Extractives of Stereospermum suaveolens. , pp.13(1), 31 – 36 , 2014 .

Haque, M.R. and Ahmed, I., Islam, R., Sikder, M.A.A., Al-Mansur M.A., Rashid, M.A. : Alkaloid, Sterol and Triterpenoids from Glycosmis pentaphylla (Retz.) DC., Dhaka University Journal of Pharmaceutical Sciences , pp.13(2), 115 – 118 , 2014 .

Haque, M.R. and Ahsan, M., Hossain, M.B., Islam, S.N., Gray, A.I., Hasan, C.M. : Cytotoxic dimeric quinolone-terpene alkaloids from the root bark of Zanthoxylum rhetsa., Phytochemistry , pp.103, 6-12. , 2014 .

Haque, M.R. and Islam, R., Ahmed, I., Sikder, A.A., Al-Mansur, A., Ahmed, M., Rasheed, M., Rashid, M.A. : Chemical Investigation of Mesua nagassarium (Burm. f.) Kosterm., Journal of Basic & Applied Sciences , pp.10,124-128 , 2014 .

Haque, M.R. and Rashid, M.A., Sikder, M.A.A., Chowdhury, A.A., Rahman, M.S., Hasan, C.M : Review on chemistry and bioactivities of secondary metabolites from some medicinal plants and microbes of Bangladesh., Bangladesh Pharmaceutical Journal , pp.17(1), 63 – 79 , 2014 .

Haque, M.R. and Rahman, A., Sultan, M.Z.,Jabbar, A. : Brine shrimp lethality and antimicrobial properties of various extracts of Amoora rohituka., Daffodil Int. Univ. J. Sci. Tech , pp.9(1), 7 – 9 , 2014 .

Haque, M.R. and Anjum, A., Sikder, M.A., Hasan, C.M., Rashid, M.A. : In Vitro Antioxidant and Thrombolytic Activities of Bridelia Species Growing in Bangladesh, J. Sci. Res. , pp.5(2), 343-35 , 2013 .

Haque, M.R. and Kuddus, M.R., Rumi, F., Hassan, M.A., Rashid, M.A. : Assessment of antioxidant, antimicrobial and cytotoxic properties of fruits of Melocanna baccifera (Roxb.) Kurz., Turk. J. Pharm. Sci. , pp.10(2), 185 – 192 , 2013 .

Haque, M.R. and Sikder, M.A.A., Tasnuva Sharmin, T., Rahman, A.F.M.M., Rahman, M.S., Rashid, M.A. : Screenings of Four Medicinal Plants of Bangladesh for Bioactivities., Dhaka University Journal of Pharmaceutical Sciences , pp.12(1), 59 – 62 , 2013 .

Haque, M.R. and Sharker, S.M., Hossain, M.K., Kabir, A.N.M.H., Hasan, C.M.,Rashid, M.A. : Phytochemical and Pharmacological Studies of Bryophyllum daigremontianum (Raym.)., Am. J. PharmTech Res. , pp.3(3), 484 – 492 , 2013 .

Haque, M.R. and Sikder, M.A.A., Rashid R.B., Islam, F., Hossian, K.M.N., Siddique, A.B., Kabir, S., Rahman, M.S., Rashid, M.A. : Screening of ten medicinal plants of Bangladesh for analgesic activity on Swiss-albino mice., Oriental Pharmacy and Experimental Medicine , pp.13(4), 327-332 , 2013 .

Haque, M.R. and Sharmin, T., Islam, F. Sikder, M.A.A., Kabir, S., Rashid, M.A. : Membrane Stabilizing and Preliminary Hypoglycemic Activities of Picrasma javanica., Bangladesh Pharmaceutical Journal , pp.16(1), 89-92 , 2013 .

Haque, M.R and Ahmed, K.T., Ahsan, M., Hasan, C.M. : Isoflavones from the Bark of Ormosia robusta (Fabaceae) baker., Am. J. PharmTech Res. , pp.3(1), 811 – 818 , 2013 .

Haque, M.R. and Roy, J., Aktar, F., , Begum, B. Hasan, C.M. : A rare homoisoflavonoid Cambodianol from Sansevieria roxburghiana., Asian J. Chem. , pp.25(9), 5113 – 5114 , 2013 .

Haque, M.R. and Huq, M.M., Begum, S., Sohrab, M.H., Ahsan, M., Hasan, C.M. : Secondary metabolites from the stem of Ravenia spectabilis Lindl, Pharmacognosy Magazine , pp.9(33), 76 – 80 , 2013 .

Haque, M.R. and Ara, K., Kaisar, M.A., Rahman, A.H.M.M., Hasan, C.M., Rashid, M.A. : New Diarylheptanoid from Garuga pinnata Roxb., Dhaka University Journal of Pharmaceutical Sciences , pp.11(2), 165 - 167 , 2012 .

Haque, M.R. and Sharker, S.M., Hossain, M.K., Chowdhury, A.A., Kaisar, M.A. Hasan, C.M., Rashid, M.A. : Chemical and biological studies of Kalanchoe pinnata (Lam.) growing in Bangladesh., Asian Pacific Journal of Tropical Biomedicine , pp.S1317-S1322 , 2012 .

Haque, M.R. and Hasan, A.A., Azam, A.T.M.Z., Hasan, C.M. : Triterpenoids and steroids isolated from aerial parts of Glochidion multilocular, Pakistan Journal of Scientific and Industrial Research; Ser.A: Phys. Sci. , pp.55(3), 163-168 , 2012 .

Haque, M.R. and Ahsan, M., Islam, SK.N., Gray, A.I., Hasan, C.M. : New Labdane Diterpenes from the Aerial Parts of Scoparia dulcis L., Phyto. Lett. , pp.5, 609-612. , 2012 .

Haque, M.R. and Uddin, N., Hossain, M.K.,Hasan, C.M. : Chemical Investigation of Paederia foetidae (Rubiaceae)., Asian J. Chem. , pp.25(2), 1163 – 1164. , 2012 .

Haque, M.R. and Anjum, A., Rahman, M.S., Hasan, C.M., Haque, M.E., Rashid, M.A. : In vitro antibacterial, antifungal and cytotoxic activity of three Bangladeshi Bridelia species., International Research of Pharmacy and Pharmacology , pp.1(7), 149-154. , 2011 .

Haque, M.R. and Bendiabdellah, Y., Villanueva-Margalef, I., Misale, A., Nahar, K.S., , Thurston, D.E., Zinzalla G. : One-Pot Synthesis of Fused-Tetracyclic Scaffolds Employing a Lewis Acid Catalyzed Domino Reaction of Naphthoquinones., Synthesis , pp.14, 2321-2333 , 2011 .

Haque, M.R. and Zinzalla, G., Basu, B.P., Anderson, J., Kaye, S.L., Haider, S., Hasan, F., Antonow, D., Essex, S., Rahman, K.M., Palmer, J., Morgenstern, D., Wilderspin, A.F., Neidle, S., Thurston, D.E. : A novel small-molecule inhibitor of IL-6 signalling., Bioorganic & Medicinal Chemistry Letters , pp.20, 7029–7032 , 2010 .

Haque, M.R. and Antonow, D., Marrafa, T., Dawood, I., Ahmed, T., Thurston, D.E., Zinzalla, G. : (2010). Facile oxidation of electron-poor benzo[b]thiophenes to the corresponding sulfones with an aqueous solution of H2O2 and P2O5., Chem. Commun. , pp.46, 2289–2291. , 2010 .

Haque, M.R. and Chowdhury, S.A., Sohrab, M.H.,Hasan, C.M., Rashid M.A. : Phytochemical and biological investigations of Polygonum lanatum., Oriental Pharmacy and Experimental Medicine , pp.8(1), 97-102 , 2008 .

Haque, M.R., and Begum, R., Rahman, M.S., Chowdhury, A.M.S., Rashid M.A. : Antimicrobial activity and cytotoxicity of Clausena suffruticosa., The Dhaka University Journal of Pharmaceutical Sciences , pp.5, 81-83 , 2006 .

Haque, M.R. and Rahman, K.M., Hasan, C.M., Rashid M.A. : Antimicrobial and cytotoxic activities of Stereospermum chelonoides., Dhaka University Journal of Pharmaceutical Sciences , pp.5, 71-72. , 2006 .

Haque, M.R. and Rahman, K.M., Magdy, N. Iskander, Hasan, C.M., Rashid M.A : Stereochenols A and B, two quinines from Stereospermum chelonoides., Phytochemistry , pp.67, 2663-2665 , 2006 .

Haque, M.R. and Rahman, K.M., Begum, B., Hasan, C.M., Rashid M.A. : Secondary Metabolites from Stereospermum chelonoides., The Dhaka University Journal of Pharmaceutical Sciences , pp.4, 61-64. , 2005 .

Islam, M., Jannat, T., Kuddus, M.R., Rashid, M.A. and Haque, M.R. : In vitro and in vivo evaluation of pharmacological potentials of Campsis radicans L., Clinical Phytoscience , vol.5 , pp.42 , 2019 .

Bulbul, I.J., Rashid, M.A. and Haque, M.R. : Pharmacological Studies of Different Fractions of Litsea monopetala Roxb., Bangladesh Pharmaceutical Journal , vol.23 , no.1 , pp.61-64 , 2020 .

Bulbul, I.J., Haque, M.R. and Rashid, M.A. : Pharmacological Investigations of Litsea lancifolia (Roxb.) Hook. F., Bangladesh Journal of Botany , vol.49 , no.1 , pp.179-183 , 2020 .

Islam, M., Kuddus, M.R., Rashid, M.A. and Haque, M.R. : Phytochemical Investigations of Campsis Radicans L., Journal of Applied Pharmaceutical Research , vol.8 , no.3 , pp.55-59 , 2020 .

Alam, S., Emon, N.U., Shahriar, S., Richi, F.T., Haque, M.R., Islam, M.N., Sakib, S.A. and Ganguly, A. : Pharmacological and computer-aided studies provide new insights on Millettia peguensis Ali (Fabaceae)., Saudi Pharmaceutical Journal , vol.28 , pp.1777–1790 , 2020 .

Haque, M.R., Islam, M. and Kuddus, M.R. : In vitro and in vivo evaluation of pharmacological potential of Begonia barbata Wall., Future Journal of Pharmaceutical Sciences , vol.6 , pp.112 , 2020 .

Akther, A., Haque, M.R., Rashid, M.A. and Khan, M.W. : In vitro Antimicrobial Activity of Some Synthetic Indolium Chloride Derivatives., Dhaka University Journal of Pharmaceutical Sciences , vol.19 , no.2 , pp.133-137 , 2020 .

Alam, S., Rashid, M.A., Sarker, M.M.R., Emon, N.U., Arman, M., Mohamed, I.N. and Haque, M.R. : Antidiarrheal, antimicrobial and antioxidant potentials of methanol extract of Colocasia gigantea Hook. f. leaves: evidenced from in vivo and in vitro studies along with computer-aided approaches., BMC Complement Med Ther , vol.21 , no.1 , pp.119 , 2021 .

Anjum, N., Hossain, M.J., Haque, M.R., Chowdhury, A., Rashid, M.A. and Kuddus, M.R. : Phytochemical Investigation of Schleichera oleosa (Lour.) Oken Leaf., Bangladesh Pharmaceutical Journal , vol.24 , no.1 , pp.33-36 , 2021 .