@book { DasintegraleunddasgebrocheneGanze,
    title = "Das integrale und das gebrochene Ganze",
    subtitle = "Zum 100. Geburtstag von Leo Gabriel",
    author = "Yvanka B. {Raynova} and Susanne {Moser}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1099024"
}