Joly, J.S., Maury, M., Joly, C., Duprey, P., Boulekbache, H., and Condamine, H. (1992) Expression of a zebrafish caudal homeobox gene correlates with the establishment of posterior cell lineages at gastrulation. Differentiation; research in biological diversity. 50:75-87

Reece-Hoyes, J.S., Keenan, I.D., Pownall, M.E., and Isaacs, H.V. (2005) A consensus Oct1 binding site is required for the activity of the Xenopus Cdx4 promoter. Developmental Biology. 282(2):509-523