Gran L, Bergsholm P, Bleie H. Seizure duration in unilateral electroconvulsive therapy. A comparison of the anaesthetic agents etomidate and Althesin with methohexitone. Acta Psychiatr Scand. 1984 Jun;69(6):472–83. doi: 10.1111/j.1600-0447.1984.tb02522.x. PMID: 6741597.