1. Underwood, EJ. 1962.Trace Elements in Human and Animal Nutrition, 2, 157–186. New York: Academic Press Inc.
2. ACCELERATION OF WOUND HEALING IN MAN WITH ZINC SULPHATE GIVEN BY MOUTH
3. Pories, WJ, Strain, WHRob, CG. Trace elements and wound healing. Proceedings of the First Conference on Trace Substances in Environmental Health. pp.114–133. Columbia, Mo: University of Missouri. in