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 (Jan. 1950), 125–134. DOI:https://doi.org/10.26515/rzsi/v47/i1/1950/162183.