@book { DieLogikderLiebe,
    title = "Die Logik der Liebe",
    subtitle = "Von Erich Fromm zur Letztbegründung",
    author = "Hanul {Sieger}",
    year = "1997",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1085339"
}