27. goblin. D. D. et at Are Convulsant Gases Also Anesthetics? Anesthesia & Analgesia 60. 464-470 (1981). 28. Urban, B. W In Modern Anesthetics (ed. B W Urban) 3-29 (Springer. 2008). 29. Davies, R. H., Signal. R. D. & Jones. W G. M. A quantitative interpretation of phase effects in anaesthesia. Internation