Akhilesh, K.V. & Manjebrayakath, H. & Ganga, U. & Bineesh, K.K. & Rajool Shanis, C.P. (2008)
Morphometric characteristics of the pelagic stingray Pteroplatytrygon violacea (Bonaparte, 1832) caught off Cochin, southwest coast of India.
Journal of the Marine Biological Association of India, 50(2), 235–237