1. Lunn J.H., Mushin W.W. 1982. Mortality associated with anaesthesia. London. The Nuffield Provincial Hospital Trust.
2. Naqvi N.H. 1982. Proceedings of VI European Congress of Anaesthesiology. Paper 393. Association of Anaesthetists of Great Britain and Ireland.
3. Robischon T. 1983. Computed Spirometry. Respiratory Therapy. Jan/Feb.
4. Tompkin W.J., Webster J.G. 1981. Design of Microcomputer based Medical Instrumentation. Englewood Cliffs. New Jersey. Prentice Hall Inc.