@book { DiepolnischeTelekommunikationvordemEUBeitritt,
    title = "Die polnische Telekommunikation vor dem EU-Beitritt",
    subtitle = "Schwerpunkt Festnetz",
    author = "Malgorzata {Stankiewicz}",
    year = "2003",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b13676",
    url = "https://www.peterlang.com/document/1068267"
}