@book { DerentgangeneGewinn,
    title = "Der entgangene Gewinn",
    subtitle = "Dogmatik und Anwendung des § 252 BGB",
    author = "Frank {Halfpap}",
    year = "1999",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1087281"
}