Suksaeree, Jirapornchai, Chaowalit Monton, and Laksana Charoenchai. 2014. “MORPHOLOGY STUDY OF PLAI PATCHES BY THE SCANNING ELECTRON MICROSCOPE. PART II: CHITOSAN AND POLYVINYL ALCOHOL BLENDS”. International Journal of Pharmacy and Pharmaceutical Sciences 6 (7):446-48. https://journals.innovareacademics.in/index.php/ijpps/article/view/1765.