Prasad B Ram, Singh Vidya S, Chander Subhash, Kumar Jitendra
Division of Entomology, Indian Agricultural Research Institute, New Delhi 110 012, India.
Bull Environ Contam Toxicol. 2007 Apr;78(3-4):235-8. doi: 10.1007/s00128-007-9139-1. Epub 2007 May 10.