Henderson, A.C. & Reeve, A.J. & Ambu-Ali, A. (2014)
Microanatomy of the male and female reproductive tracts in the long-tailed butterfly ray Gymnura poecilura, an elasmobranch with unusual characteristics. Journal of Fish Biology, 84(2), 297–313
DOI: 10.1111/jfb.12282

Henderson, A.C. & Mcilwain, J.L. & Al-Oufi, H.S. & Ambu-Ali, A. (2006)
Reproductive biology of the milk shark Rhizoprionodon acutus and the bigeye houndshark Iago omanensis in the coastal waters of Oman. Journal of Fish Biology, 68(6), 1662–1678
DOI: 10.1111/j.0022-1112.2006.01011.x