1. Onoja, A.O. and A.I. Achike, 2015. Effects of economic growth, trade openness, deforestation and agricultural trade on African Environmental Quality (1960-2008): A 2SLS approach. Int. J. Agric., 126: 363-375.
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2. Onoja, A.O., E.N. Ajie and A.I. Achike, 2014. Econometric analysis of influences of trade openness, economic growth and urbanization on greenhouse gas emission in Africa (1960-2010). J. Econ. Sustainable Dev., 5: 85-93.
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3. Onoja, A.O. and T.U. Ogali, 2014. Economic survey of oil palm products' processing and marketing in Kogi state, Nigeria. Consilience: J. Sustainable Dev., 13: 336-346.
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4. Onoja, A.O. and A.I. Emodi, 2014. Factors influencing agricultural business investment decision by women in Rivers state, Nigeria. Prod. Agric. Technol. J., 10: 32-43.
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5. Onoja, A.O. and A.I. Achike, 2014. Effects of climate change, poverty and macroeconomic policies on agricultural trade performance in Nigeria. Br. J. Environ. Climate Change, 4: 66-82.
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6. Onoja, A.O. and A.I. Achike, 2014. Economic analysis of climate change effects on arable crop production in Nigeria. J. Econ. Sustainable Dev., 5: 76-84.
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7. Ajie, E.N. and A.O. Onoja, 2014. Profit efficiency analysis in cocoyam wholesale marketing in Rivers state, Nigeria: A stochastic frontier approach. J. Econ., 114: 222-229.
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8. Achike, A.I. and A.O. Onoja, 2014. Greenhouse gas emission determinants in Nigeria: Implications for trade, climate change mitigation and adaptation policies. Br. J. Environ. Climate Change, 4: 114-136.
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9. Onoja, A.O., I. Akpotobor and B.C. Herbert, 2013. Analysis of productivity determinants and challenges facing broiler production in Rivers state, Nigeria. J. Econ., 113: 173-183.
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10. Onoja, A.O., E.N. Ajie and V.C. Ugwuja, 2013. Impact of climate variability, agricultural expenditure and arable land expansion on food output in Nigeria (1978-2009): A bounds cointegration approach. J. Agric. Food Sci., 1: 25-32.
11. Onoja, A.O., N.J. Deedam and A.I. Achike, 2012. Profitability and yield determinants in Nigerian cocoa farms: Evidence from Ondo state. J. Sustainable Dev. Afr., 14: 172-183.
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12. Onoja, A.O., E.N. Ajie, B.A.B. Usoroh and E.E. Anwana, 2012. Effects of oil spillage on artisanal fishing in Akwa Ibom state, Nigeria: An empirical evaluation. Afr. J. Agric. Technol. Environ., 1: 32-38.
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13. Onoja, A.O., C.D.B. Ohamara and E.N. Ajie, 2012. Profit efficiencies of universal banks and financial conglomerates in Nigeria: Implications for agricultural finance in Nigeria. Agric. Econ. Extension Res. Stud., 1: 138-145.
14. Onoja, A.O., B.B. Usoroh, D.T. Adieme and N.J. Deedam, 2012. Determinants of market participation in nigerian small-scale fishery sector: Evidence from Niger Delta region. J. Sustainable Dev., 9: 69-84.
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15. Onoja, A.O. and O. Idoko, 2012. Econometric analysis of factors influencing fuel wood demand in rural and peri-urban farm households of Kogi state. Consilience: J. Sustainable Dev., 8: 115-127.
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16. Onoja, A.O. and E.N. Ajie, 2012. Econometric analysis of food crops' response to climate variability and macroeconomic policies' reforms in Nigeria (1978-2009). Asian J. Agric. Rural Dev., 2: 487-497.
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17. Onoja, A.O. and B.C. Herbert, 2012. Econometric evaluation of rice profitability determinants in Kogi state, Nigeria. J. Agric. Extension Rural Dev., 4: 107-114.
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18. Onoja, A.O. and A.I. Emodi, 2012. Analysis of gender and poverty effects on loan defaults rate among arable crop farmers in Rivers state, Nigeria. J. Agric. Extension Rural Dev., 4: 478-485.
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19. Onoja, A.O. and A.I. Emod, 2012. Economic analysis of fuelwood production and consumption: Evidence from a Nigerian state. Br. J. Manage. Econ., 2: 13-23.
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20. Onoja, A.O., M.E. Onu and S. Ajodo-Ohiemi, 2011. Contributions of financial sector reforms and credit supply to Nigerian agricultural sector (1978-2009). J. Applied Stat., 2: 83-98.
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21. Onoja, A.O. and A.I. Achike, 2011. Resource productivity in small-scale catfish (Clarias gariepinus) farming in Rivers state, Nigeria: A translog model approach. J. Agric. Social Res., 11: 139-146.
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22. Onoja, A.O. and A.I. Achike, 2010. Farm resource technical efficiencie's determinants in rural cassava farms in Kogi state, Nigeria. Asia-Pac. J. Rural Dev., 20: 31-46.
23. Onoja, A.O. and A.I. Achike, 2010. Comparative analysis of farm resource efficiencies in rice production under small-scale farmer-managed irrigation schemes and rainfed systems in Kogi state, Nigeria. Res. J. Agric. Biol. Sci., 6: 1047-1054.
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24. Onoja, A.O. and A. Emodi, 2010. Econometric evaluation of profit determinants in plantain farming: Evidence from Rivers state, Nigeria. Niger. Agric. J., 42: 202-208.
25. Herbert, B.C. and A.O. Onoja, 2010. Socio-economic analysis of cassava-based cropping system in Rivers state, Nigeria. J. Agric. For. Social Sci., Vol. 8. 10.4314/joafss.v8i1.64815.
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26. Achike, A.I., A.O. Onoja and B.C. Herbert, 2010. Foreign direct agricultural investment's determinants in Nigerian economy before and after deregulation 1970-2007. Niger. Agric. J., 42: 1-11.
27. Onoja, A.O. and H.C. Unaeze, 2009. Forest income determinants among rural households of etche local government area, Rivers state, Nigeria. J. Sustainable Dev. Afr., 11: 152-166.
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28. Onoja, A.O., S.O. Adejoh and A.M. David, 2008. Loan performance of development banks and their impact on farmers' income: A case study of Nigerian agricultural cooperative and rural development bank, Kogi state. Global Approaches Extension Pract.: J. Agric. Extension, 4: 1-5.
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29. Onoja, A.O. and H.C. Unaeze, 2008. Socio-economic determinants of productivity and income of rice farmers in udenu local government areas, Enugu state, Nigeria. J. Agric. Social Res., 8: 57-63.
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30. Audu, S.I. and A.O. Onoja, 2005. Economic analysis of activities of women in agricultural production in ankpa local government area, Kogi state Nigeria. Prod. Agric. Technol., 1: 9-16.