SASTAWA, B.; TURAKI, Z. Seasonal variation in the insecticidal action of chilli pepper (Capsicum frutescens) products on the cowpea bruchid (Callosobruchus maculatus f.) infesting stored cowpea seeds in Maiduguri, north-eastern Nigeria. ARID ZONE JOURNAL OF ENGINEERING, TECHNOLOGY AND ENVIRONMENT, v. 3, p. 49-55, 1 Oct. 2003.