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2. Chu, Y.: Tool Support for the Goal-Oriented Requirement Language. M.C.S. project report, University of Ottawa, August (2005),
http://www.site.uottawa.ca/~damyot/students/YiChuReportAndTool.zip
3. Domain-Specific Modeling Forum,
http://www.dsmforum.org
4. Eclipse: Eclipse Modeling Framework (EMF),
http://www.eclipse.org/emf/
5. Eclipse: Graphical Editing Framework (GEF),
http://www.eclipse.org/gmf/