Nahla H. Alaswadko and Rayya A. Hassan and Bayar N. Mohammed, Empirical Roughness Progression Models of Heavy Duty Rural Pavements. journal = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. February 2018, vol. 135(3). 301 - 307 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/10008714.