Chang, Belinda S.W., Mikhail V. Matz, Steven F. Field, Johannes Müller, and Ilke van Hazel. "Dealing with model uncertainty in reconstructing ancestral proteins in the laboratory: examples from archosaur visual pigments and coralfluorescent proteins." Ancestral Sequence Reconstruction. : Oxford University Press, 2007-05-31. Oxford Scholarship Online. 2008-09-01. Date Accessed 25 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299188.001.0001/acprof-9780199299188-chapter-15>.
Chang, B., Matz, M., Field, S., Müller, J., & van Hazel, I.(2007-05-31). Dealing with model uncertainty in reconstructing ancestral proteins in the laboratory: examples from archosaur visual pigments and coralfluorescent proteins. In Ancestral Sequence Reconstruction. : Oxford University Press. Retrieved 25 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299188.001.0001/acprof-9780199299188-chapter-15.
Chang, Belinda S.W., Mikhail V. Matz, Steven F. Field, Johannes Müller, and Ilke van Hazel. "Dealing with model uncertainty in reconstructing ancestral proteins in the laboratory: examples from archosaur visual pigments and coralfluorescent proteins." In Ancestral Sequence Reconstruction. : Oxford University Press, 2007-05-31. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299188.001.0001/acprof-9780199299188-chapter-15.
Chang BS, Matz MV, Field SF, Müller J, van Hazel I. Dealing with model uncertainty in reconstructing ancestral proteins in the laboratory: examples from archosaur visual pigments and coralfluorescent proteins. In: Liberles DA. Ancestral Sequence Reconstruction. Oxford University Press; 2007. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199299188.001.0001/acprof-9780199299188-chapter-15. Accessed May 25, 2013.