TY - CONF A1 - Helmerich, Rosemarie A1 - Milmann, Boris A1 - Hong, S. T1 - Investigation of Reinforcement Corrosion using Automated Low-Frequency Ultrasonic Echo T2 - Danube Adria Symposium T2 - Danube Adria Symposium CY - Stary Smokovec, Slowakei DA - 2015-09-21 PY - 2015 AN - OPUS4-34449 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -