1. OKO, G. O. and J. E. ASIEGBU. 2001. Evaluation of Varieties of Tomato for Yield, Quality and Optimum Time of Fertilizer Application for a Rainy Season Crop. In: B. N. Mbah and K. P. Baiyeri (eds.), Proceedings of the 19th Annual Conference of Horticultural Society of Nigeria (HORTSON), University of Nigeria, Nsukka. May 28 – June 1, 2001, Pp. 126 – 133.
2. OKO-IBOM, G. O. and ASIEGBU, J. E. 2006. Growth and Yield responses of Rainy Season Field Tomatoes to Timing and Splitting of Fertilizer Application. Agro-Science 5 (1): 17 – 25.
3. OKO-IBOM, G. O. and ASIEGBU, J. E. 2007. Aspects of Tomato Fruit Quality as Influenced by Cultivar and Scheme of Fertilizer Application. Agro-Science 6 (1): 72 – 82.