1. 1. RS Atkinson, GB Rushman, and JA. Lee, A synopsis of anaesthesia , 9th ed. Bristol: Wright P.S.G., 1982 : 304 -5 .
2. 2. SA. Feldman, Wylie, and Churchill-Davidson In: A practice of anaesthesia , 4th ed. London: Lloyd-Luke. 1978 : 848 , 848 .
3. 3. SA. Feldman, Muscle relaxants . Philadelphia: W.B. Saunders. 1973 : 157 .