Young RE, Roper CF. (1976). Bioluminescent countershading in midwater animals: evidence from living squid. Science. 191(4231):1046-8. PMID 1251214
Tong D, Rozas NS, Oakley TH, Mitchell J, Colley NJ, McFall-Ngai MJ.Evidence for light perception in a bioluminescent organ. Proc Natl Acad Sci U S A. 106: 9836–9841 PMID 19509343