TY - JOUR T1 - Controlled release alginate-chitosan microspheres of tolmetin sodium prepared by internal gelation technique and characterized by response surface modeling JO - Brazilian Journal of Pharmaceutical Sciences A1 - Elsayed, Mahmoud M. A. SN - 1984-8250 UL - 10.1590/s2175-97902020000118414 VL - 56 Y1 - 2020 PB - Brasil ER -