Courtney, D.L. & Foy, R. (2012)
Pacific sleeper shark Somniosus pacificus trophic ecology in the eastern North Pacific Ocean inferred from nitrogen and carbon stable-isotope ratios and diet.
Journal of Fish Biology, 80(5), 1508–1545 DOI: 10.1111/j.1095-8649.2012.03261.x