P. Yuri, Z. Ali, N. Rasyid, and P. Birowo, “Effects of Pipemidic Acid, Phenazopyridine HCL and Sodium Diclofenac on Pain Perception Following Endoscopic Urological Surgery: Double-blinded Randomized-Controlled Trial”, Acta Med Indones, vol. 48, no. 3, pp. 184-192, May 2017.