@book { NoProblemSir2, title = "No Problem, Sir! - 2", subtitle = "Indische Momente / E-Book 2", author = "Sven j. {Olsson}", year = "2017", publisher = "Bedey Media GmbH", address = "Hamburg, Deutschland", url = "https://kaderaverlag.openpublishing.com/document/380613" }