Sangeeta Varun and Tuhin Vashishth (2019) “Haemodynamic Comparison between Isobaric Bupivacaine Fentanyl and Isobaric Ropivacaine Fentanyl for Lower Abdomoinaland Lower Limb Surgery”, Academia Anesthesiologica International, 4(2), pp. 184-188. doi: 10.21276/aan.2019.4.2.42.