1. De re Metallica, 1556, Georgius Agricola, H. Hoover, translator: reprinted by Dover Press, N.Y., 1950, 638 pp. (See book VI, pg 214 ff)
2. Ellison, J. McK. 1966.The Nature of Air Pollution and Methods Available for Measuring It, Vol. v. 32, 399–409. Bull. World Health Organization.
3. Ellison, J. McK. 1965.The Particles in Town Air, 411–419. Bull. World Health Organization. v. ew
4. Relation between Exposure to Asbestos and Mesothelioma