Uddin, M. B., A. K. M. M. Hossain, M. M. Alam, and A. Z. M. S. Hossain. “Ketorolac and Pethidine in Post-Operative Pain Relief”. Bangladesh Journal of Pharmacology, vol. 2, no. 1, June 2007, pp. 35-42, doi:10.3329/bjp.v2i1.498.