TY - CONF A1 - Auersch, Lutz T1 - A simple 2-dimensional method for the effectiveness of ballast mats and other isolators of railway vibration T2 - Proceedings of the 12. International Congress on Sound and Vibration, Lissabon T2 - 12. International Congress on Sound and Vibration CY - Lisboa, Portugal DA - 2005-07-11 PY - 2005 SP - 1(?) EP - 8(?) CY - Lissabon AN - OPUS4-11564 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -