@book { SolidarittimArbeitsrecht,
    title = "Solidarität im Arbeitsrecht",
    author = "Henrike {Seifert}",
    year = "2018",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/b14550",
    url = "https://www.peterlang.com/document/1057266"
}