@article{eage:/content/papers/10.3997/2214-4609.201402760, author = "J. Cho, S. and H. Sung, N. and H. Kim, J. and S. Son, J.", title = "Detection of Cavity Size Using Borehole 3D Ultrasonic Measurement System", journal= "", year = "2006", volume = "", number = "", pages = "", doi = "https://doi.org/10.3997/2214-4609.201402760", url = "https://www.earthdoc.org/content/papers/10.3997/2214-4609.201402760", publisher = "European Association of Geoscientists & Engineers", issn = "2214-4609", type = "", eid = "cp-14-00138", }