1. Role of cobalt, iron, lead, maganese, mercury, platinum, selenium, and titanium in carcinogenesis;Kazantzis;Environ Health Perspect,1981
2. Human exposure to nickel;Grandjean;IARC Sci Publ,1984
3. Trace elements in human and animal nutrition;Underwood,1977
4. Trace elements in human and animal nutrition;Underwood,1977