1. European project PIANO New pass-by noise optimization methods for quiet and economic heavy road vehicles (contract number BRE2-CT-920210); 1996.
2. European Commission decision of 4 April 2011 concerning the technical specification for interoperability (TSI) relating to the subsystem ‘rolling stock-noise’ of the trans-European conventional rail system, Official J of the European Union, 13.4; 2011.
3. European project NABUCCO (contract number: G1RD-CT1999-00105).
4. A technique for the computation of sound radiation by vibrating bodies using multipole substitute sources;Pavic;Acust Acta Acust,2006
5. On appropriate equivalent monopole sets for rigid body scattering problems;Yves;J Acoust Soc Am,2007