“Experimental Study of the Effect of Exhaust Gas Recirculation (EGR) and Injection Timing on Emitted Emissions at Idle Period”.
Al-Khwarizmi Engineering Journal 10, no. 4 (December 26, 2017): 33–44. Accessed March 29, 2025.
https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/204.