F. van Schaik

beta-Carotene absorption and cleavage in rats is affected by the vitamin A concentration of the diet.

T. van Vliet, H. van den Berg, F. V. van Schaik, 1996, The Journal of nutrition.

Determination of several retinoids, carotenoids and E vitamers by high-performance liquid chromatography. Application to plasma and tissues of rats fed a diet rich in either beta-carotene or canthaxanthin.

T. van Vliet, J. Schrijver, F. V. van Schaik, 1991, Journal of chromatography.