Brody R. Clark and  Chaminda Gallage and  John Yeaman,  Temperature Susceptibility of Multigrade Bitumen Asphalt and an Approach to Account for Temperature Variation through Deep Pavements .   journal   = {International Journal of Urban and Civil Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2018, vol. 138(6). 712 - 717
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/10009385.