S. V. V. Tonder

Absorption of biliary cobalamin in baboons following total gastrectomy.

D. Jacobsen, Ralph Green, S. V. V. Tonder, 1982, The Journal of laboratory and clinical medicine.

Plasma amino acids and tissue methionine levels in fruit bats (Rousettus aegyptiacus) with nitrous oxide-induced vitamin B12 deficiency

J. Gibson, T. Kilroe-Smith, J. H. van der Westhuyzen, 1985, British Journal of Nutrition.