Politis GD, Frankland MJ, James RL, ReVille JF, Rieker MP, Petree BC. Factors associated with successful tracheal intubation of children with sevoflurane and no muscle relaxant. Anesth Analg. 2002 Sep;95(3):615–20, table of contents. doi: 10.1097/00000539-200209000-00022. PMID: 12198047.