Shirazi, O. U. .; Khattak, M. M. A. K. .; Shukri, N. A. M. . Chromatographic Evaluation of Gallic Acid, Catechin and Quercetin in Methanolic Extracts of Selected Formulations of Spices and Herbs. Progr Nutr 2020, 21 (2-S), 236-251. https://doi.org/10.23751/pn.v21i2-S.5417.