Kee, S.-H., Oh, T., Popovics, J. S., Arndt, R. W., and Zhu, J., (2012), Nondestructive
bridge deck testing with air-coupled impact-echo and infrared thermography, ASCE Journal
of Journal of Bridge Engineering, 17(6), 928-939. DOI: 10.1061/(ASCE)BE.1943-5592.0000350