@inbook{publication-7541,
	address={Copenhagen},
	author={Seidl, David},
	booktitle={Niklas Luhmann and Organization Studies},
	editor={Seidl, David and Becker, Kai},
	pages={21-53},
	publisher={Copenhagen Business School Press},
	title={The Basic Concepts of Luhmann's theory of social systems},
	year=2005,
}