@book { EbenholzundschwarzeTrnen, title = "Ebenholz und schwarze Tränen", subtitle = "Yakub Singer ermittelt", author = "Reimer Boy {Eilers}", year = "2016", publisher = "Bedey Media GmbH", address = "Hamburg, Deutschland", url = "https://kaderaverlag.openpublishing.com/document/317871" }