Aglio, Linda S.; Litvak, Eva A.; Desai, Sukumar P. (January 2016). "History of anaesthesia". European Journal of Anaesthesiology. 33 (1): 1ā3. doi:10.1097/EJA.0000000000000356. PMID26627677.
Aglio, Linda S.; Litvak, Eva A.; Desai, Sukumar P. (January 2016). "History of anaesthesia". European Journal of Anaesthesiology. 33 (1): 1ā3. doi:10.1097/EJA.0000000000000356. PMID26627677.