D., S. R.; G., M.; SHIVKUMAR, K.; THANGAVEL, G. DEVELOPMENT AND VALIDATION OF HPLC METHOD FOR SIMULTANEOUS QUANTIFICATION OF VASICINE, GLYCYRRHIZIN AND PIPERINE IN POLY HERBAL COUGH SYRUP. International Journal of Current Pharmaceutical Research, [S. l.], v. 12, n. 2, p. 15–19, 2020. DOI: 10.22159/ijcpr.2020v12i2.37480. Disponível em: https://innovareacademics.in/journals/index.php/ijcpr/article/view/37480. Acesso em: 30 sep. 2022.