@book { InternalisierungexternerEffekte,
    title = "Internalisierung externer Effekte",
    author = "Marcus {Dittrich}",
    year = "2002",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832450823",
    url = "https://m.diplom.de/document/220613"
}