J. Nwosu, N. Onuegbu, N. Kabuo, and M. Okeke, “The Effect of Steeping with Chemicals (Alum and Trona) on the Proximate and Functional Properties of Pigeon Pea (Cajanus cajan) Flour”, Pak. J. Nutr., vol. 9, no. 8, pp. 762–768, Jul. 2010, doi: 10.3923/pjn.2010.762.768.