Barnett, A. & Redd, K.S. & Frusher, S.D. & Stevens, J.D. & Semmens, J.M. (2010)
Non-lethal method to obtain stomach samples from a large marine predator and the use of DNA analysis to improve dietary information.
Journal of Experimental Marine Biology and Ecology, 393(1–2), 188–192 DOI: 10.1016/j.jembe.2010.07.022