@book { BadBankerimWhrungskrieg,
    title = "Bad Banker im Währungskrieg",
    author = "Markus A. {Will}",
    year = "2013",
    publisher = "hey! publishing",
    address = "München, Deutschland",
    doi = "10.3239/9783942822060",
    url = "https://www.heypublishing.com/document/206749"
}