KelsayJLJacobRAPratherES. Effect of fiber from fruit and vegetables on metabolic responses of human subjects, III. Zinc, copper and phosphate balances. Am J Clin Nutr1979; 32: 2307–11.
2.
EngelRWPriceNUMillerRF. Copper, manganese, cobalt, and molybdenum balance in pre-adolescent girls. J Nutr1967; 92: 197–204.
3.
World Health Organization Technical Report Series No. 532. Trace elements in human nutrition. World Health Organization, 1973; Geneva.