Rowat, D. & Gore, M. & Meekan, M.G. & Lawler, I.R. & Bradshaw, C.J.A. (2009)
Aerial survey as a tool to estimate whale shark abundance trends. Journal of Experimental Marine Biology and Ecology, 368(1), 1–8
DOI: 10.1016/j.jembe.2008.09.001