J. P.  Balhoff, Dahdul, W. M., Kothari, C. R., Lapp, H., Lundberg, J. G., Mabee, P. M., Midford, P. E., Westerfield, M., et Vision, T. J., « Phenex: Ontological Annotation of Phenotypic Diversity », vol. 5, p. e10500, 2010.

W. M.  Dahdul, Balhoff, J. P., Engeman, J., Grande, T., Hilton, E. J., Kothari, C. R., Lapp, H., Lundberg, J. G., Midford, P. E., Vision, T. J., Westerfield, M., et Mabee, P. M., « Evolutionary Characters, Phenotypes and Ontologies: Curating Data from the Systematic Biology Literature », vol. 5, p. e10708, 2010.