BALASUBRAMANIAN, M. P., S. PALIANICHAMY, and S. ARUNACHALAM. “COMPARATIVE STUDIES ON INTESTINAL PHOSPHATASES IN FISHES”. UTTAR PRADESH JOURNAL OF ZOOLOGY, vol. 7, no. 1, Jan. 1987, pp. 40-47, https://www.mbimph.com/index.php/UPJOZ/article/view/1027.