1. The circle system as a humidifier;Bengston;Br J Anaesth,1989
2. Dose regulated Penthrane (methoxyflurane) anesthesia;Lowe,1972
3. Quantitative closed circuit anesthesia;Lowe;Anesthesiol Rev,1974
4. Low flow and closed system anesthesia,1979
5. The quantitative practice of anesthesia: use of closed circuit;Lowe,1981