@book { ZweiAlfredBekkerKrimisDerKillervonHamburgDerHacker, title = "Zwei Alfred Bekker Krimis: Der Killer von Hamburg & Der Hacker", author = "Alfred {Bekker}", year = "2019", publisher = "Uksak E-Books", address = "Lengerich, Deutschland", url = "https://uksakebooks.grin.com/document/370160" }