E. M. Osman Grace Baratta-Perez Thomas J. Walsh Kenneth J. Fowler A unique tool set for engineering complex systems. 234- 1995 conf/iceccs/1995 ICECCS http://doi.ieeecomputersociety.org/10.1109/ICECCS.1995.479335 db/conf/iceccs/iceccs1995.html#OsmanBWF95