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Integration Oriented Standards
UBL 2.0 Business Processes
This is an important one because if we want to implement an integration standard this is a big one to consider (ie UBL 2.0), and OAGIS is another.
This document has quite a few diagrams and definitions which are very helpful.
http://docs.oasis-open.org/ubl/os-UBL-2.0/UBL-2.0.html#BUSINESSPROCESSES
Also in the same document the list of schemas for process communication documents is helpful:
http://docs.oasis-open.org/ubl/os-UBL-2.0/UBL-2.0.html#SCHEMAS
ebXML Catalog of Common Business Processes
This is a little older from 2001, but still useful and includes a list of related processes in many different standard specs. This is a large document with a really long list of fairly granular processes.
http://www.ebxml.org/specs/bpPROC.pdf
Universal Business Language 1.0 ebBP 2.0 Business Process Definitions
This is more related to UBL 1.0, but is recent (from 2006) and useful. It is brief though.
http://docs.oasis-open.org/ubl/cs-UBL-1.0-SBS-1.0/universal-business-process-1.0-ebBP/