Maitra, S. K., R. Dey, and S. Bhattacharya. “Seasonal Reproduction in Fish:A Functional Interplay Between the Pineal Organ and Photoperiods”. Journal of Endocrinology and Reproduction, vol. 5, no. 1&2, Dec. 2001, pp. 1-12, https://informaticsjournals.co.in/index.php/jer/article/view/4431.