I. Dewan, M. Elias-Al-Mamun, and R.- ul Jalil, “<i>In vitro</i> Release Kinetics of Progesterone from Biodegradable <i>In situ</i> Implant System”, Dhaka Univ. J. Pharm. Sci, vol. 6, no. 2, pp. 99–103, Feb. 2008.