1. Veterinary Obstetrics;Benesch,1952
2. The pathology of experimental hypovitaminosis A in young dairy animals;Helmboldt;Amer. J. Vet. Res.,1953
3. Cystic pituitary in young cattle with vitamin A deficiency;Madsen;J. Nutrition,1942
4. The pathology of marginal vitamin A deficiency in calves;Nielsen;Res. Vet. Sci.,1966