1. Porphyria cutanea tarda in South Africa: Metabolic basis of disordered haem biosynthesis;Blekkenhorst,1976
2. Hepatic haem metabolism in porphyria cutanea tarda (PCT): Enzymatic studies and their relation to liver ultrastructure;Blekkenhorst;Ann. Clin. Res,1976
3. The nature of hepatic cytochrome P-450 induced in hexachlorobenzene-fed rats;Blekkenhorst;Clin. Sci. Molec. Med.,1978
4. Iron and porphyria cutanea tarda: Activation of uroporphyrinogen decarboxylase by ferrous iron in porphyria cutanea tarda;Blekkenhorst;S. Afr. Med. J.,1979
5. Quantitation of red cell porphyrins by fluorescence scanning after thin layer chromatography;Day;Clin. Chim. Acta,1978