TY - BOOK AU - Drążek, Zbigniew AU - Maciołek, Tadeusz AU - Szeląg, Adam AU - Steczek, Marcin PY - 2018 TI - Energy efficiency of a railway line supplied by 3 kV supply system – a case study of the application of an inverter in a traction substation T2 - SP - EP - VL - ER -