@book { berschussrenditendurchStockPicking,
    title = "Überschussrenditen durch Stock Picking?",
    author = "Florian {Müller}",
    year = "2012",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783842844179",
    url = "https://m.diplom.de/document/229344"
}