1. Loulizi A, Al-Qadi IL. Use of electromagnetic waves to evaluate civil infrastructure. In: Meier U, Betti R, editors. Recent advances in bridge engineering, 1997. p. 335–45.
2. Maser KR. Measurement of as-built conditions using ground penetrating radar. In: Hartbrower PE, Stolarski PJ, editors. Structural Materials Technology: An NDT Conference, 1996. p. 61–7.
3. Use of ground penetrating radar for detecting voids under a jointed concrete pavement;Clemena;Transport. Res. Record,1987
4. D'Angelo JA. Portland cement concrete pavement stabilization. Washington, DC: Federal Highway Administration, 1986.
5. Sheftick DE, Bartoski TA. Study of void detection methods and slab stabilization procedures. Pennsylvania Department of Transportation: Bureau of Construction and Materials, 1997.