Karim, Md Enayet, et al. “A Comparative Study of Induction Characteristics of Thiopentone, Midazolam and Propofol in Elderly Patients”. Journal of the Bangladesh Society of Anaesthesiologists, vol. 26, no. 1, Aug. 2014, pp. 5-11, doi:10.3329/jbsa.v26i1.19808.