1. Dust exposure, pneumoconiosis, and mortality of coalminers;Miller, B.G.; Jacobsen, M.;Br Jf Ind Med,1985
2. Long-term mortality in miners with coal workers' pneumoconiosis in the Netherlands: a pilot study;Meijers, J.M.M.; Swaen, G.M.H.; Slangen, U.M.; Vliet, K.V.; Sturmans, F.S.;Am J Ind Med,1991
3. Textbook of clinical occupational and environmental medicine;Rosenstock, L.; Cullen, M.R.,1994
4. Report on the air of coal mines;Nasmyth, T.G.;BMJ 1888
5. Guidelines for the use of ILO international classification of radiographs of pneumoconiosts;Office, International Labour,22.)