Sadeghia, Mohammad, and Hossein Hosseinzadeh. “A Novel PH-Responsive Superabsorbent Hydrogel Based on Collagen for Ephedrine Controlled Release: Hydrogel for Ephedrine Controlled Release”. Biological Sciences - PJSIR 56, no. 2 (August 29, 2013): 82–89. Accessed May 4, 2024. https://v2.pjsir.org/index.php/biological-sciences/article/view/157.