K. Amaefule, M. Ironkwe, and G. Ojewola, “Pigeon Pea (Cajanus cajan) Seed Meal as Protein Source for Pullets: 1. Performance of Grower Pullets Fed Raw or Processed Pigeon Pea Seed Meal Diets”, Int. J. Poult. Sci., vol. 5, no. 1, pp. 60–64, Dec. 2005, doi: 10.3923/ijps.2006.60.64.