Land M.F. & Fernald R.D. 1992. The evolution of eyes. Annual Review of Neuroscience15: 1–29. [1]Archived 2016-05-30 at the Wayback Machine
nih.gov
ncbi.nlm.nih.gov
Plachetzki D.; Fong C. & Oakley T. 2010. The evolution of phototransduction from an ancestral cyclic nucleotide gated pathway. Proceedings of the Royal Society / Biological sciences277 (1690): 1963–1969. doi:10.1098/rspb.2009.1797. PMID 20219739.
Shichida Y. & Matsuyama T. 2009. Evolution of opsins and phototransduction. [2]Philosophical transactions of the Royal Society of London. Series B, Biological sciences. 364 (1531): 2881–2895. doi:10.1098/rstb.2009.0051. PMID 19720651
web.archive.org
Land M.F. & Fernald R.D. 1992. The evolution of eyes. Annual Review of Neuroscience15: 1–29. [1]Archived 2016-05-30 at the Wayback Machine