1. Uroporfyrinogensynthase in Erythrocyten bei akuter intermittender Porphyrie;Doss;J. clin. chem. Biochem.,1978
2. Urinary delta-aminolevulinic acid and porphobilinogen in different types of porphyria;Haeger;Lancet,1958
3. Variegate porphyria in Finland;Koskelo,1978
4. Hereditary coproporphyria;Lomholt;Acta med. scand.,1969
5. A genetic study of two families having the acute intermittent type of porphyria;Ludwig;Ann. intern. Med.,1961