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2. Organization and environment;Aldrich,1979
3. Service system fundamentals: Work system, value chain and life cycle;Alter;IBM System Journal,2008
4. Reducing the fear of crime in a community as a complex service system: The Case of London Borough of Sutton, Introduction to the FMM 2011;Andreu,2011
5. An introduction to cybernetics;Ashby,1956