1. BS 3806: specification for breathing machines for medical use;British Standards Institution (BSI),1964
2. ANSI Z79.7: breathing machines for medical use;American National Standards Institute (ANSI),1976
3. Laboratory testing of automatic ventilators;Mushin,1969
4. ISO 5369: breathing machines for medical use — lung ventilators;International Organisation for Standardisation (ISO),1987
5. IEC 601-2-12: particular requirements for the safety of lung ventilators;International Electrotechnical Commission (IEC),1988