1. Rapid porphyrin screening of urine, stool and blood;Haining, R.G.; Hulse, T.; Labbe, R.F.;Clin Chem,1969
2. Quantitative determination of porphobilinogen and porphyrins in urine and porphyrins in faeces and erythrocytes;Rimington, C.;ACP Broadsheet,1971
3. Ion exchange analysis of porphyrins in urine;With, T.K.; Pedersen, J.S.;ScandJ Clin Lab Invest,1978
4. Spectral-absorption coefficients of some porphyrins in the Soret-band region;Rimington, C.;Biochem J
5. Urinary total porphyrins by ion exchange analysis: reference values for the normal range and remarks on preformed porphyrins in acute porphyria urine;Fogstrup, J.; With, T.K.;J Clin Pathol,1979