J.  Gatesy, O'Grady, P., and Baker, R. H., ?Corroboration among data sets in simultaneous analysis: hidden support for phylogenetic relationships among higher level artiodactyl taxa?, Cladistics, vol. 15, pp. 271-313, 1999.

R. H.  Baker and DeSalle, R., ?Multiple sources of character information and the phylogeny of Hawaiian drosophilids?, Systematic Biology, vol. 46, pp. 654-673, 1997.

R. H.  Baker, Yu, X., and DeSalle, R., ?Assessing the relative contribution of molecular and morphological characters in sumultaneous analysis trees?, Molecular Phylogenetics and Evolution, vol. 9, pp. 427-436, 1998.