TY  - BOOK
AU  - Jackson, Michael
TI  - Problem frames: analyzing and structuring software development problems 
SN  - 0-201-59627-x
AV  - QA 76.76 .J33 2001
PY  - 2001///
CY  - New York
PB  - Addison-wesley
KW  - Problem frames
KW  - Composite frames
KW  - Problems and sub problems
ER  -