Hew, N. F., H. T. Khor, Y. M. Choo, S. F. Yap, and S. H. Goh. “Unusual Accumulation of a-Tocopherol in Rabbits Fed Palm-Oil Diets Enhanced With Various Vitamin E Components”. Malaysian Journal of Science, vol. 15, no. 1&2, June 1994, pp. 73-80, https://mjs.um.edu.my/index.php/MJS/article/view/4762.