W. M. Pumfrey

Bioavailability and interaction of vitamin A and vitamin E in ruminants.

G. T. Schelling, M. Garber, R. A. Roeder, 1995, The Journal of nutrition.

Dose-response effects of vitamin E supplementation on growth performance and meat characteristics in beef and dairy steers

G. T. Schelling, P. Davidson, M. Garber, 1996 .