TY  - BOOK
AU  - Davis, Alan M
TI  - Software requirements: objects, functions, and states 
SN  - 013805763X
AV  - QA 76.76.D47 D38.1993
PY  - 1993///
CY  - Englewood Cliffs, N.J.
PB  - Prentice Hall
KW  - Software de computadora
KW  - Desarrollo
ER  -