4Hinrichsen J A, Heggen J. Minimum Voids in Mineral Aggregate in Hot-Mix Asphalt Based on Gradation and Volumetric Properties [ M/CD ]. Transportation Research Record, 1996
5AASHTO Deisngation Standard Test Method for Determining the Permanent Shear Strain and Stiffness of Asphalt Mixtures Using the Superpave Shear Tester[ S