TY  - BOOK
AU  - Aalst, Wil Van Der
AU  - Hee , Kees Van
TI  - Workflow management: Models, methods and systems 
SN  - 9788120337947
PY  - 2002///
CY  - New Delhi
PB  - PHI Learning Pvt. Ltd.
KW  - Workflow Management
ER  -