Debruyne, R.; van Holt, A.; Barriel, V. & Tassy, P. (2003). "Status of the so-called African pygmy elephant (Loxodonta pumilio (Noack 1906)): phylogeny of cytochrome b and mitochondrial control region sequences". Comptes Rendus Biologies. 326 (7): 687–697. doi:10.1016/S1631-0691(03)00158-6. PMID14556388.
Debruyne, R.; van Holt, A.; Barriel, V. & Tassy, P. (2003). "Status of the so-called African pygmy elephant (Loxodonta pumilio (Noack 1906)): phylogeny of cytochrome b and mitochondrial control region sequences". Comptes Rendus Biologies. 326 (7): 687–697. doi:10.1016/S1631-0691(03)00158-6. PMID14556388.