@book { Kapitalmarktmodelle,
    title = "Kapitalmarktmodelle",
    subtitle = "Lineare und nichtlineare Modellkonzepte und Methoden in der Kapitalmarkttheorie",
    author = "Stefan {Wilhelm}",
    year = "2001",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1091506"
}