an Entity references as follows:
Yugoslav Railways (Serbo-Croatian: Jugoslavenske željeznice/Jugoslovenske železnice, Југославенске жељезнице/Југословенске железнице; Macedonian: Југословенски железници; Slovene: Jugoslovanske železnice), with standard acronym JŽ (ЈЖ in Cyrillic), was the state railway company of Yugoslavia, operational from the 1920s to the 1990s, with its final incarnation transferring to Serbia, the successor of JZ is the joint stock company of the Serbian Railways in 2006.