TY  - BOOK
AU  - Checkland, Peter.
TI  - Soft systems methodology: a 30 year retrospective 
SN  - 9780471986065
PY  - 2009///
CY  - Chichester [etc.]
PB  - John Wiley&Sons
N1  - Bibliogr. s.299-311. Indeks
ER  -