1990
Systematics and biogeography of the Asiatic cobra (Naja naja) species complex in the Philippine Islands. pp. 333-344.
In: Peters, G. & Hütterer, R. (eds.). Vertebrates in the Tropics. Proceedings of the International Symposium on Vertebrate Biogeography and Systematics in the Tropics, Bonn, June 5-8, 1989. Alexander Koenig Zoological Research Institute and Zoological Museum, Bonn. 424 pp.