Agune, Girma, Muluken Nigatu, Tesfaye Gabriel, Abrham Temesgen, Yonas Brhane, and Marew Tesfa. 2018. “COMPARATIVE IN VITRO EVALUATION OF DIFFERENT BRANDS OF NIFEDIPINE 20mg RETARD TABLET PRODUCTS MARKETED IN ADDIS ABABA, ETHIOPIA”. Journal of Drug Delivery and Therapeutics 8 (3): 1-5. https://doi.org/10.22270/jddt.v8i3.1685.