Moselhy, A. A., and E. El Hady. “Gross, Histochemical and Electron Microscopical Characterization of the Pecten Oculi of Baladi Ducks (Anas Boschas Domesticus)”. Journal of Advanced Veterinary and Animal Research, vol. 6, no. 4, Nov. 2019, pp. 456-62, https://banglajol.info/index.php/JAVAR/article/view/44114.