1. C.C. Cheng and C.P. Yu, An Investigation of the Transfer Function of the Impact-Echo Response and its Application, in CD - IDN 517, 15th WCNDT, Nov. 2000, Roma, Italy.
2. C. C. Cheng and H. C. Chiou, Evaluation of the Effect of Steel Bar to the Transfer Function Developed from the Impact-Echo Response, The 6 th Far-East Conference on Non-Destructive Testing, in compact disk, Oct. 21-24, 2002, Tokyo, Japan.
3. C.C. Cheng and H.C. Chiou, Evaluating the Bond-Loss of Reinforcing Bar in New Concrete Construction Subjected to Earthquake Using the Impact-Echo Method, to be published on Journal of the Chinese Institute of Engineers, Vol. 25, No. 4, 2002, pp.425-436.