@book { SchritteberGrenzen,
    title = "Schritte über Grenzen",
    author = "Kirsten Michael {Schmiedel}",
    year = "2013",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03246-8",
    url = "https://www.peterlang.com/document/1047494"
}