Iqbal, A., N. Liaqat, and S. H. Dar. “Comparison of Local Infiltration of Bupivacaine and Tramadol in Post- Operative Pain Management in Children After Inguinal Herniotomy”. Iranian Journal of Pediatric Surgery, vol. 4, no. 2, Dec. 2018, pp. 54-60, doi:10.22037/irjps.v4i2.21641.