U. Bhatia and H. Chaudhary, “Comparative Study of Racemic Mixture of 0.5% Bupivacaine , 0.5 % Levo Bupivacaine And 0.75% Ropivacaine In Lumbar Epidural Anaesthesia In Patients Undergoing Lower Abdominal Surgeries: Study of Racemic Mixture of 0.5% Bupivacaine , 0.5 % Levo Bupivacaine And 0.75% Ropivacaine In Epidural”, Natl J Integr Res Med, vol. 8, no. 5, pp. 22–26, Feb. 2018.