4Dhingra-S. Development of resistance in the bean aphid, Aphis craccivora Koch to various insecticides used for nearly a quartercentury [J]. Journal-of-Entomologieal-Research,1994,18 (2) : 105-108.
5Dhingra-S. Relative texicite of some important insecticides with particular reference to change in susceptibility level of Myzus persicae Sulz to synthetic pyrethroids [J]. Journal of Entomological Research, 1993,17 ( 2 ) : 99-103.