Number of items: 2.
Monograph
    Checkland, P.B.
  
(1981).
    Handbook of Systems Analysis: Volume 1. Overview. Chapter 5. Formulating Problems for Systems Analysis.
  
    IIASA Working Paper.
  IIASA, Laxenburg, Austria: WP-81-135
  
  
    Checkland, P.B.
  
(1980).
    Formulating Problems for Systems Analysis.
  
    IIASA Working Paper.
  IIASA, Laxenburg, Austria: WP-80-059
  
  
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