1. Udo, M.T., N.O. Abiaobo and I.E. Asuquo, 2015. Aspects of the reproductive biology in mudskippers, Periophthalmus barbarus (Gobiidae) (Linneaus, 1766) in mangrove swamp of Iko estuary, Southeast Nigeria. Continental J. Biol. Sci., 9: 1-14.
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2. Essien-Ibok, M.A., I.E. Asuquo and I.E. Ekpo, 2014. The assessment of acute toxicity of urea fertilizer against Heterobranhus bidorsalis fingerlings. Global J. Fish. Aquaculture, 2: 169-176.
3. Essien-Ibok, M.A., A.W. Akpan, M.T. Udo, L.A. Chude, I.A. Umoh and I.E. Asuquo, 2010. Seasonality in the physical and chemical characteristics of Mbo River, Akwa Ibom State, Nigeria. Nig. J. Agric. Food Environ., 6: 60-72.
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4. Asuquo, I.E. and M.A. Essien-Ibok, 2004. Acute toxicity of N. P. K. 15:15:15 fertilizer on fingerlings of Heterobranchus bidorsalis. West Afr. J. Applied Ecol., 22: 31-43.