The Global Burden of Snakebite: A Literature Analysis and Modelling Based on Regional Estimates of Envenoming and Deaths. Kasturiratne A, Wickremasinghe AR, de Silva N, Gunawardena NK, Pathmeswaran A, et al. PLoS Medicine Vol. 5, No. 11, e218 doi:10.1371/journal.pmed.0050218 (Link to Article)

The Herpetofauna of Sri Lanka. De Silva, Anslem. First Edition 2001. ARROS
ISBN  955-8213-01-2

Handbook on the Management of Snake Bite in Sri Lanka. Kularatne, S.A.M. First Edition 2004. Author Pub. 
ISBN  955-98594-0-4

Snake Fauna of Sri Lanka. De Silva, P.H.D.H. First Edition 1980. National Museums of Sri Lanka

Venomous Snakes of the World. O’Shea, Mark. First US/Canada Edition 2005    Princeton Uni. Press (USA). 
ISBN  0-691-12436-1

A Photographic Guide to Snakes and other Reptiles of Sri Lanka.  De Silva, Anslem; Das, Indraneil. First Edition  2005. New Holland Pub.(UK).
ISBN 1-84330-923-04

Oxford Text Book of Medicine. Second Edition 1987. Editors: Prof. David Warrel, et al. Oxford Uni. Press.

High Incidence of Snake Bites in Sri Lanka – Some Possible Factors.  De Silva, Anslem. Aug 11, 2005. Internet: “Snakebite in Sri Lanka”