Timothy F. Wright, Erin E. Schirtzinger, Tania Matsumoto, Jessica R. Eberhard, Gary R. Graves, Juan J. Sanchez, Sara Capelli, Heinrich Müller, Julia Scharpegge, Geoffrey K. Chambers, Robert C. Fleischer
Mol Biol Evol. 2008 Oct; 25(10): 2141–2156. Published online 2008 Jul 24. doi: 10.1093/molbev/msn160