1. Environmental and Occupational Medicine. 3rd ed.;Balaan,1998
2. Hunter’s Diseases of Occupations. 9th ed.;Elmes,2000
3. Diseases associated with exposure to silica and nonfibrous silicate minerals.;Arch Pathol Lab Med,1988
4. The relation between fibrosis of hilar lymph glands and the development of parenchymal silicosis.;Murray;Br J Ind Med,1991
5. Quartz exposures and severe silicosis: a role for the hilar nodes.;Seaton;Occup Environ Med,1998