@book { ImewigenKreisZumjdischenKalenderjahr,
    title = "Im ewigen Kreis. Zum jüdischen Kalenderjahr",
    author = "Jehuda {Grünewald}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1071004"
}