T. Obih and B. Ekenyem, “Performance Characteristics of Finisher Broiler Chicks Fed Varying Levels of Exogenous Enzyme Supplemented Bambara Seed [Vigna subterranean (L) Verdc] Offal as Replacement for Maize”, Pak. J. Nutr., vol. 9, no. 5, pp. 409–412, Apr. 2010, doi: 10.3923/pjn.2010.409.412.