TY  - GEN
AU  - Leffingwell, Dean
AU  - Widrig, Don
TI  - Managing software requirements : a use case approach
SN  - 8129703912
PY  - 2003///
CY  - Delhi
PB  - Pearson
KW  - SOFTWARE ENGINEERING
KW  - SYSTEM ENGINEERING
KW  - PRODUCT MANAGEMENT
ER  -