@article{eage:/content/papers/10.3997/2214-4609-pdb.190.inf01, author = "Lualdi, Maurizio and Zanzi, Luigi", title = "The Psg, A New Positioning System To Execute 3D Gpr Surveys For Utility Mapping", journal= "", year = "2003", volume = "", number = "", pages = "", doi = "https://doi.org/10.3997/2214-4609-pdb.190.inf01", url = "https://www.earthdoc.org/content/papers/10.3997/2214-4609-pdb.190.inf01", publisher = "European Association of Geoscientists & Engineers", issn = "2214-4609", type = "", eid = "cp-190-00073", }