Fedorov, A., Cao, X., Saxonov, S., de Souza, S. J., Roy, S. W., & Gilbert, W. (2001). Intron distribution difference for 276 ancient and 131 modern genes suggests the existence of ancient introns. The National Academy of Sciences.

Fedorov, Alexei, Xiaohong Cao, Serge Saxonov, Sandro J. de Souza, Scott W. Roy, e Walter Gilbert. Intron Distribution Difference for 276 Ancient and 131 Modern Genes Suggests the Existence of Ancient Introns. The National Academy of Sciences, 2001.

Fedorov, Alexei, et al. Intron Distribution Difference for 276 Ancient and 131 Modern Genes Suggests the Existence of Ancient Introns. The National Academy of Sciences, 2001.