K. . NGUYEN, D. . ZHANG, and J. . SHERMA, “DEVELOPMENT OF QUANTITATIVE HPTLC-DENSITOMETRY METHODS FOLLOWING A MODEL APPROACH FOR TRANSFER OF TLC SCREENING METHODS FOR PHARMACEUTICAL PRODUCTS OF METFORMIN HCL, POTASSIUM CLAVULANATE, CAFFEINE, FLUOXETINE HCL, AND GABAPENTIN”, Studia UBB Chemia, vol. 62, no. 2, pp. 9–18, Jun. 2017.