Timothy C Grammer

Accelerated gene evolution and subfunctionalization in the pseudotetraploid frog Xenopus laevis

Paul Richardson, Uffe Hellsten, Daniel S Rokhsar, 2007, BMC Biology.

Techniques and probes for the study of Xenopus tropicalis development

Nancy Papalopulu, Aaron M Zorn, N. Papalopulu, 2002, Developmental dynamics : an official publication of the American Association of Anatomists.