• SZWEDOWICZ, DARIUSZ SLAWOMIR, DEPARTMENT OF MECHANICAL ENGINEERING, NATIONAL CENTER FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT, CUERNAVACA, MORELOS
• SZYMAŃSKI, GRZEGORZ MAREK, POZNAŃ UNIVERSITY OF TECHNOLOGY, DIVISON OF RAIL VEHICLE, UL. PIOTROWO 3, 61- 138 POZNAŃ
• SZYMANSKI, GRZEGORZ MAREK, POZNAN UNIVERSITY OF TECHNOLOGY, INSTITUTE OF TRANSPORT, DEPARTMENT OF RAILWAY TRANSPORT