@article{eage:/content/papers/10.3997/2214-4609.201410457, author = "J. Fenner, T.", title = "New variable frequency antenna for an impulse ground penetrating radar system", journal= "", year = "1992", volume = "", number = "", pages = "", doi = "https://doi.org/10.3997/2214-4609.201410457", url = "https://www.earthdoc.org/content/papers/10.3997/2214-4609.201410457", publisher = "European Association of Geoscientists & Engineers", issn = "2214-4609", type = "", eid = "cp-45-00119", }