1. D. Hollingsworth, Workflow Management Coalition - The Workflow Reference Model, Tech. rep., Workflow Management Coalition (Jan. 1995).
2. Scientific workflows: Business as usual?;Ludäscher,2009
3. Examining the challenges of scientific workflows;Gil;Computer,2007
4. OMG, Business Process Modeling Notation, V1.1, Business Process Modeling Notation, V1.1 (01 2008).
5. OASIS, Web Services Business Process Execution Language Version 2.0, http://docs.oasis-open.org/wsbpel/2.0/OS/wsbpel-v2.0-OS.html (04 2007).