1. Impact-echo: A method for flaw detection in concrete using transient stress waves;Sansalone;National Bureau of Standards Report NBSIR 86-3452, Gaithersburg, Maryland,1986
2. Field determination of stiffness and integrity of PCC members using the SASW method;Bay,1990
3. In situ determination of elastic moduli of pavement systems by SASW method (practical aspects);Nazarian,1985
4. In situ determination of elastic moduli of pavement systems by SASW method (theoretical aspects);Nazarian,1986