Steiner, C.; et al. (2005). "New DNA data from transthyretin nuclear intron suggest an Oligocene to Miocene diversification of living South American opossums (Marsupialia: Didelphidae)". Molecular Phylogenetics and Evolution. 35 (2): 363–379. Bibcode:2005MolPE..35..363S. doi:10.1016/j.ympev.2004.12.013. PMID15804409.
Steiner, C.; et al. (2005). "New DNA data from transthyretin nuclear intron suggest an Oligocene to Miocene diversification of living South American opossums (Marsupialia: Didelphidae)". Molecular Phylogenetics and Evolution. 35 (2): 363–379. Bibcode:2005MolPE..35..363S. doi:10.1016/j.ympev.2004.12.013. PMID15804409.
Steiner, C.; et al. (2005). "New DNA data from transthyretin nuclear intron suggest an Oligocene to Miocene diversification of living South American opossums (Marsupialia: Didelphidae)". Molecular Phylogenetics and Evolution. 35 (2): 363–379. Bibcode:2005MolPE..35..363S. doi:10.1016/j.ympev.2004.12.013. PMID15804409.