@book { HhereGewaltimDokumentenakkreditivgeschft,
    title = "Höhere Gewalt im Dokumentenakkreditivgeschäft",
    author = "Gabriele {Fontane}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1092104"
}