9BRAZ D, DA MOTTA L M G, LOPES R T. Computed Tomography in the Fatigue Test Analysis of an Asphaltic Mixture [J]. Applied Radiation and Isotopes, 1999, 50 (4) : 661 -671.
10GARBOCZI E J. Three-dimensional Mathematical Analysis of Particle Shape Using X-ray Tomography and Spherical Harmonics: Application to Aggregates Used in Concrete [J]. Cement and Concrete Research, 2002, 32 (10) : 1621 - 1638.