TY  - BOOK
AU  - Booch,Grady .
AU  - Jacobson,Ivar  .
AU  - Rumbaugh,James  .
TI  - Unified modelling language user guide / 
U1  - 005.117U 
PY  - 1998///
CY  - California : 
PB  - Addison Wesley , 
KW  - UML
KW  - Unified modelling language
ER  -