Setna, S. B. and Sarangdhar, P. N. (1950) “A Contribution to the Systematics of Scoliodon Acutus (Rüppell), Hemipristis Elongatus (Klunzinger) and Torpedo Zugmayeri Engelhart”, Records of the Zoological Survey of India, 47(1), pp. 125–134. doi: 10.26515/rzsi/v47/i1/1950/162183.