Weidner, T.A. & Hirons, A.C. & Leavitt, A. & Kerstetter, D.W. (2017)
Combined gut-content and stable isotope trophic analysis of the pelagic stingray Pteroplaytrygon violacea (Bonaparte, 1832) diet from the western North Atlantic Ocean. Journal of Applied Ichthyology, 33(3), 386–394
DOI: 10.1111/jai.13259

Sigler, M.F. & Hulbert, L.B. & Lunsford, C.R. & Thompson, N.H. & Burek, K. & O'Corry-Crowe, G. & Hirons, A.C. (2006)
Diet of Pacific sleeper shark, a potential Steller sea lion predator, in the north-east Pacific Ocean. Journal of Fish Biology, 69(2), 392–405
DOI: 10.1111/j.1095-8649.2006.01096.x