1. Routine analysis of porphyrines in urine;Askevold, R.;Scandinavian Journal of Clinical and Laboratory Investigation,1951
2. Un semplice metodo per la determinazione della deltaamino-levulinico-deidratasi nel sangue. Comportamento dell' enzima nell' intossicazione saturnina;Bonsignore, D.; Calissano, P.; Cartasegna, C.;Medicina del Lavoro,1965
3. Effect of lead exposure on the level of delta-aminolevulinic-dehydratase activity;de Bruin, A.;Medicina del Lavoro,1968
4. Early signs of lead-exposure. A comparative study of laboratory tests;de Bruin, A.; Hoolboom, H.;British Journal of Industrial Medicine,1967
5. Studies in lead poison-ing. Comparison -between different laboratory tests;Cramer, K.; Selander, S.,1965