@book { Arbeitskampfparitt,
    title = "Arbeitskampfparität",
    subtitle = "Eine rechtliche und rechtstatsächliche Untersuchung",
    author = "Klaus {Ruhland}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092008"
}