1. Rapid determination of urinary total porphyrins by ion-exchange chromatography;Doss, M.; Schmidt, A.;Zeitschrift fur klinische Chemie und klinische Biochemie,1971
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3. The normal excretion variability of urinary coproporphyrin in healthy men (in Polish);Karger, Basle. Gutniak, 0.; Dancewicz, A. M;Medycyna Pracy,1957
4. The occurrence and determination of delta-aminolevulinic acid and porphobilinogen in urine;Mauzerall, D.; Granick, S.;Journal of Biological Chemistry,1956
5. Routine analysis of porphyrins in urine;Mills, G.C.;Clinical Chemistry,1961