@book { SocialScienceandPoliticalPracticeinInternationalRelationsBridgingtwosystems,
    title = "Social Science and Political Practice in International Relations  -  Bridging two systems",
    author = "Jan {Lachenmayer}",
    year = "2008",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638016780",
    url = "https://www.hausarbeiten.de/document/87257"
}