Polyauk, Olgya, and Liliya Logoyda. 2017. “THE INVESTIGATION OF CONDITIONS OF API FROM GROUP OF CALCIUM CHANNEL BLOCKERS EXTRACTION BY ORGANIC SOLVENTS BY USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY AS ASSAY METHOD”. Asian Journal of Pharmaceutical and Clinical Research 10 (10):354-56. https://doi.org/10.22159/ajpcr.2017.v10i10.20506.