TY  - BOOK
AU  - Davis,Alan M.
TI  - Software requirements: objects, functions and states 
SN  - 013805763X
AV  - QA76.76.D47  .38 1993
PY  - 1993///
CY  - Engllewood Cliffs, New Jersey
PB  - PTR Prentice Hall
KW  - Computer software
KW  - Development
N1  - Revised
ER  -