1. Adeyoju, S. K. (1975). Forestry and the Nigerian economy (308 pp.). Ibadan: University Press.
2. CAB/IIBC (1987). Prospects for biological control of the oriental yellow scale, Aonidiella orientalis (Newstead) as pest of neem in Africa. UK: Ascot.
3. Cooper, M., & Delacy, I. H. (1994). Relationships among analytical methods used to study genotypic variation and genotype-by-environment interaction in plant breeding and multi-environment experiments. Theoretical and Applied Genetics, 88, 561–572.
4. Cooper, M., Delacy, I. H., & Eisermann, R. Z. (1993). Recent advances in the study of genotype × environment interaction and their application to plant breeeding. In Imrie, B. C. & Hacker, J. B. (Eds.), Focussed plant improvement: Towards responsible and sustenable agriculture (Vol. 1, pp. 116−131). Proceedings of Tenth Australian Plant Breeding Conference, Canberra.
5. Cooper, M., Woodruff, D. R., Eisemann. R. L., Brennan, P. S., & Delacy, I. H. (1995). A selection strategy to accommodate genotype-by-environment interaction for grain yield of wheat: Managed-environments for selection among genotypes. Theoretical and Applied Genetics, 90, 492–502.