1. Investigations on the occurrence of hereditary diseases in the Danish cattle population 1989-1991;Agerholm;Acta Veterinaria Scandinavica,1993
2. A case of congenital porphyrinuria (“pink tooth”) in a grade Friesland cow;Flight;Journal of the South African Veterinary Medical Association,1940
3. A further case of congenital porphyrinuria (pink tooth) in a living grade Friesland cow in South Africa. (Cedara case);Fourie;Onderstepoort Journal of Veterinary Science and Animal Industry,1937
4. Living animal cases of congenital porphyrinuria;Fourie;Nature,1937
5. Bovine congenital erythropoietic porphyria;Franco;Compendium for the Continuing Education of Practicing Veterinarians,1992