Akbari, Ghasem, and Davoud Kianifard. 2017. “Anatomy, Histology and Histochemistry of Accessory Sex Glands in Male Persian Squirrel (Sciurus Anomalus)”. Italian Journal of Anatomy and Embryology 122 (1):17-26. https://oajournals.fupress.net/index.php/ijae/article/view/1584.