1. Andersen I, Falconbridge Nickel Plant, Kristiansand, Norway, Personal communication
2. Eljarn L, National Hospital, Oslo, Norway, Personal communication
3. Ihnat M, Thomassen Y, Wolynetz M, Veillon C (1986) Acta Pharm Toxicol 59 (Supplement VII):566–572
4. Ihnat M, Wolynetz M, Thomassen Y, Verlinden M (1986) Pure Appl Chem 58:1063–1076
5. Sunderman Jr FW, Crisostomo MC, Reid MC, Hopfer SM, Nomoto S (1984) Ann Clin Lab Sci 14:232–241