1. Workflow Management: Models, Methods, and Systems;van der Aalst,2002
2. T. Andrews, F. Curbera, H. Dholakia, Y. Goland, J. Klein, F. Leyman, K. Liu, D. Roller, D. Smith, S. Thatte, I. Trickovic, S. Weerawarana, Business Process Execution Language for Web Services, BEA, IBM, Microsoft, SAP, Siebel, 2003
3. S. Angelov, P. Grefen, B2B eContract handling––a survey of projects, papers and standards, CTIT Technical Report 01-21, University of Twente, 2001
4. J. Bitcheva, O. Perrin, C. Godart. Cross-organizational processes coordination, Technical Report LORIA A02-R-046, Nancy, May 2002
5. Integrating workflow management systems with B2B interaction standards;Casati,2002