1. Studies on the role of intrinsic factor in vitamin B12 absorption, transport, and storage;Herbert;Am J Clin Nutr,1959
2. Stoichiometric relation between liver-receptor, intrinsic factor and vitamin B12;Herbert,1960
3. Determination of blood sugar;Somogyi;J Biol Chem,1945
4. Assay of serum vitamin B12 concentration using Co57-B12 and intrinsic factor;Rothenberg,1961
5. Assay of vitamin B12 in blood. A simple method;Barakat;Lancet,1961