K. Straif, R. Baan, Y. Grosse, B. Secretan, F. El Ghissassi, V. Bouvard, L. Benbrahim-Tallaa, N. Guha, V. Cogliano. (2009). The IARC Monographs Vol. 100C. The Carcinogenicity of Metals, Fibres, Crystalline Silica, Wood Dust and Some Related Occupations