@book { Revisingconceptsforinterfirmcollaboration,
    title = "Revising concepts for interfirm collaboration",
    subtitle = "A case-based approach",
    author = "Nils {Klingemann}",
    year = "2003",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    doi = "10.3239/9783832468033",
    url = "https://m.diplom.de/document/222154"
}