R. E. TARIGAN, H. FAISAL, I. K. LASE, and S. P. HAFIFAH, “APPLICATION MEAN CENTERING RATIO SPECTRA METHOD FOR TERNARY MIXTURE OF DEXTROMETHORPHAN HBr, DOXYLAMINE SUCCINATE, AND PSEUDOEPHEDRINE HCl IN TABLET PREPARATIONS”, Int J App Pharm, vol. 16, no. 4, pp. 244–249, Jul. 2024.