Salaam Yitbarek

Roseman, M., Yitbarek, S. and Greenberg, S. (1993)
GroupKit Tutorial. Research report, Department of Computer Science, University of Calgary, Calgary, Alberta, Canada, May. Updated periodically; other versions posted over time available on request.
PDF Paper
Roseman, M., Yitbarek, S. and Greenberg, S. (1993)
The GroupKit Reference Manual. Research report, Department of Computer Science, University of Calgary, Calgary, Alberta, Canada, April. Updated periodically; other versions posted over time available on request..
PDF Paper