Shoshani, J.; Ferretti, M. P.; Lister, A. M.; Agenbroad, L. D.; Saegusa, H.; Mol, D.; Takahashi, K. (2007). «Relationships within the Elephantinae using hyoid characters». Quaternary International. 169-170: 174. Bibcode:2007QuInt.169..174S. doi:10.1016/j.quaint.2007.02.003.
Li, J.; Hou, Y.; Li, Y.; Zhang, J. (2012). «The latest straight-tusked elephants (Palaeoloxodon)? "Wild elephants" lived 3000 years ago in North China». Quaternary International281: 84. Bibcode:2012QuInt.281...84L. doi:10.1016/j.quaint.2011.10.039.
harvard.edu
adsabs.harvard.edu
Shoshani, J.; Ferretti, M. P.; Lister, A. M.; Agenbroad, L. D.; Saegusa, H.; Mol, D.; Takahashi, K. (2007). «Relationships within the Elephantinae using hyoid characters». Quaternary International. 169-170: 174. Bibcode:2007QuInt.169..174S. doi:10.1016/j.quaint.2007.02.003.
Li, J.; Hou, Y.; Li, Y.; Zhang, J. (2012). «The latest straight-tusked elephants (Palaeoloxodon)? "Wild elephants" lived 3000 years ago in North China». Quaternary International281: 84. Bibcode:2012QuInt.281...84L. doi:10.1016/j.quaint.2011.10.039.