TY  - BOOK
AU  - Sommerville, Ian
AU  - Sawyer,Pete
TI  - Requirements engineering: a good practice guide 
SN  - 0471974447
PY  - 1999///
CY  - Chichester, Eng.
PB  -  New York,  Wiley
KW  - Computer software
KW  - Development
KW  - System analysis
KW  - Systems engineering
N1  - Includes bibliographical references and index
ER  -