TY  - BOOK
AU  - Kotonya, Gerald
AU  - Sommervile,Ian
TI  - Requirements Engineering
SN  - 9780471972082
AV  - QA76.758 
PY  - 2003///
CY  - Chichester
PB  - John wiley & sons
KW  - Software engineering
KW  - System design
KW  - Systems engineering
KW  - Computer software
KW  - Development
UR  - https://books.google.com.pk/books/about/Requirements_Engineering.html?id=Up1QAAAAMAAJ&source=kp_book_description&redir_esc=y
ER  -