@book { CarlMenger,
    title = "Carl Menger",
    subtitle = "Neu erörtert unter Einbeziehung nachgelassener Texte- Discussed on the Basis of New Findings",
    author = "Gilles {Campagnolo}",
    year = "2008",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1104652"
}