TY - CONF A1 - Wendrich, Astrid A1 - Trela, Christiane A1 - Krause, Martin A1 - Maierhofer, Christiane A1 - Effner, Ute A1 - Wöstmann, Jens T1 - Location of voids in masonry structures by using radar and ultrasonic traveltime tomography T2 - 9th European Conference on NDT T2 - 9th European Conference on NDT CY - Berlin, Germany DA - 2006-09-25 PY - 2006 SN - 3-931381-86-2 SP - 1(?) EP - 6(?) PB - European Federation for Non-Destructive Testing CY - Berlin AN - OPUS4-14015 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -