Crompton, G. K, et al (1999), Diseases of the Respiratory system, in: Haslett, C., Chilvers, E.R., Hunter, J.A., Boon, N. (eds),
Davidson's Principles and Practices Of Medicine, 18th ed, Churchill Livingstone, Edinburgh
Hensley, M., Coughlan J. L, Gibson, P. (2001) Lung volume reduction surgery for diffuse emphysema (Cochrane Review). In:
The Cochrane Library, 2, Oxford: Update Software.
Emfyseem on line (03/09/02)
http://www.nlm.nih.gov/medlineplus/ency/article/000136.htm