REFERENCES
- Forgacs, P.: Crackles and wheezes. Lancet 2: 203 (July 22) 1967.
- Curtis, J. K., Liska, A. P., Rasmussbn, H. K. and Cree, E. M.: The bronchospastic component in patients with chronic bronchitis and emphysema. JAMA 197: 693 (August 29) 1966.