Edem, D.O., O.U. Eka, I.B. Umoh, A.P. Udoh, and E.J. Akpan. 2003. “Effect of Red Palm Oil and Refined Palm Olein on Nutrient Digestion in the Rat”. Pakistan Journal of Nutrition 2 (5): 271-78. https://doi.org/10.3923/pjn.2003.271.278.