TY  - BOOK
TI  - System Computers 
T2  - Infotech state of the art report 
SN  - 8553-9600-8
PY  - 1981///
CY  - England:  
PB  - Infotech International, 
KW  - System life-cycle
KW  - Requirements analysis
KW  - Design representation
ER  -