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3. Sansalone, M. and Carino, N. J., ‘Detecting delaminations in concrete slabs with and without overlays using the impact-echo method”,Mater. J. Amer. Concr. Inst. 86 (March 1989) 175–184.
4. Pratt, D. and Sansalone, M., ‘Impact-echo signal interpretation using artificial intelligence’,ibid. 89(2) (1992) 178–187.
5. NBSIR 86-3452;M. Sansalone,1986