Dr Tejanand, et al. “DOSE SPARING OF INDUCTION DOSE OF PROPOFOL BY FENTANYL AND BUTORPHANOL: A COMPARISON BASED ON ENTROPY ANALYSIS”. Journal of Population Therapeutics and Clinical Pharmacology, vol. 31, no. 11, Nov. 2024, pp. 392-8, https://doi.org/10.53555/pmse7w39.