@book { DeutscheAuenpolitikinderOstseeregion,
    title = "Deutsche Außenpolitik in der Ostseeregion",
    author = "Heribert {Saldik}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1098288"
}