K. Jayaseelan and K. S. Lakshmi, “CENTRAL COMPOSITE DESIGN TO DEVELOP A ROBUST REVERSED-PHASE THIN-LAYER CHROMATOGRAPHY/DENSITOMETRY METHOD FOR QUANTIFICATION OF PARABENS IN COSMETIC PREPARATIONS”, Asian J Pharm Clin Res, vol. 10, no. 10, pp. 230–234, Oct. 2017.