K. Razzaq, Ahlam, et al. “Evaluating the Effect of Air Voids and Asphalt Content on the Mechanical Properties of HMA by Adopting Indirect Tensile Strength Test”. International Journal of Engineering & Technology, vol. 8, no. 1.9, Jan. 2019, pp. 530-5, https://doi.org/10.14419/ijet.v8i1.9.26413.