OZA, N., S. SAHOO, and S. SAGAR. “A 32 FULL FACTORIAL DESIGN FOR TOPICAL CONTROLLED RELEASETAZAROTENE MICROSPONGE USING HPMC GEL”. International Journal of Applied Pharmaceutics, vol. 11, no. 5, Sept. 2019, pp. 12-18, doi:10.22159/ijap.2019v11i5.34496.