1. Effects of clofibrate and warfarin alone and in combination on the disposition of vitamin K1;Bjornsson;Journal of Pharmacology and Experimental Therapeutics,1979
2. Niacin
3. Absorption of large, single, oral intakes of ascorbic acid;Hornig;International Journal for Vitamin and Nutrition Research,1980
4. Studies on the absorption of L-xyloascorbic acid (vitamin C) in young and elderly subjects;Davies;Human Nutrition: Clinical Nutrition,1984