1. Impulsive differential equations: periodic solutions and applications;Bainov,1993
2. Microbial control of insects and mites;Burges,1971
3. Pathogen incidence and their potential as microbial control agents in IPM of maize stemborers in West Africa;Cherry;Biocontrol,1999
4. Biological control among vertebrates;Davis,1976
5. Biological control by natural enemies;Debach,1991