1. Evaluation of a new range of air drawover vaporizers;Borland;Anasthesia,1983;
2. Oxygen concentrators for district hospitals;Dobson;Update in Anasthesia,1999;
3. King M Ayim E Bion J et al. Primary Anasthesia . Oxford Medical Publications
4. Letter;Hodges;Update in Anasthesia,1998;
5. Safe anasthesia;Wilson;Bailliere’s Clinical Tropical Medicine and Communicable Diseases,1998;