1. Non destructive evaluation of existing deep foundations;Davis,1995
2. Geophysical survey techniques to determine lengths of piles and drilled shafts;Mercado,2000
3. Finno RJ, Osborn PW. Parallel seismic evaluation of the NDE test section at the national geotechnical experimentation site at Northwestern University. Final report to the Infrastructure Technology Institute; 1997 〈http://www.iti.northwestern.edu/projects/NDE/pse_index.Html〉.
4. Olson LD, Liu M, Aouad MF. Borehole NDT techniques for unknown subsurface bridge foundation testing, In: Proceedings of SPIE 2946, nondestructive evaluation of bridges and highways; 1996, pp. 10–16 .
5. Measurement of unknown bridge foundation depth by parallel seismic method;Lo;Experimental techniques,2009