Geremew Terefe; Surachate Jamornmarn; Praparat Hormchan; Apichai Daorai; Supranee Impithuksa. Evaluating Four Bioassay Techniques for Insecticide Resistance Monitoring in Helicoverpa armigera (Lepidoptera: Noctuidae). Agr. Nat. Resour. 2004, 38, 44-56.