Gloriam, D.E., Bjarnadóttir, T.K., Yan, Y.L., Postlethwait, J.H., Schiöth, H.B., and Fredriksson, R. (2005) The repertoire of trace amine G-protein-coupled receptors: large expansion in zebrafish. Molecular phylogenetics and evolution. 35(2):470-482

Hussain, A., Saraiva, L.R., and Korsching, S.I. (2009) Positive Darwinian selection and the birth of an olfactory receptor clade in teleosts. Proceedings of the National Academy of Sciences of the United States of America. 106(11):4313-4318