by Verstegen, M W, Brandsma, H A, Mateman, G, v d Hel, W
Published in Archiv fur experimentelle Veterinarmedizin (01.05.1984)

by Verstegen, M. W. A., Schutte, J. B., Hel, W. V. D., Polziehn, R., Schrama, J. W., Sutton, A. L.
Published in Journal of animal physiology and animal nutrition (01.01.1997)