(1996): Taxonomic change and toxinology: systematic revisions of the Asiatic cobras (Naja naja species complex) — Toxicon, 34: 339-406. [for Naja atra, Naja kaouthia, Naja oxiana, Naja philippinensis, Naja sagittifera, Naja samarensis, Naja siamensis, Naja sputatrix and Naja sumatrana]
(1996): Taxonomic change and toxinology: systematic revisions of the Asiatic cobras (Naja naja species complex) – Toxicon, 34: 339–406. [för Naja atra, Naja kaouthia, Naja oxiana, Naja philippinensis, Naja sagittifera, Naja samarensis, Naja siamensis, Naja sputatrix och Naja sumatrana]EurLex-2 EurLex-2