Naddafi, K., Hassanvand, M. S., Hashemi, S. Y., & Azimi, F. (2018). The effect of the increase in periodic technical inspection intervals from two to five years on vehicles emission. Journal of Air Pollution and Health, 3(3), 147-154. Retrieved from http://japh.tums.ac.ir/index.php/japh/article/view/174