@book { LiberalizationofTransportationServicesintheEUthePolishPerspective,
    title = "Liberalization of Transportation Services in the EU: the Polish Perspective",
    author = "Andrzej {Cieślik} and Jan Jakub {Michałek}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-04770-7",
    url = "https://www.peterlang.com/document/1048815"
}