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2. EGRESS (2005), http://www.aeat-safety-and-risk.com/html/egress.html
3. Ekahau Positioning Engine. (2005), http://www.ekahau.com/
4. Interdependent Infrastructure Modeling, Simulation, and Analysis Project (SOFIA), Los Alamos National Laboratory (2005), http://www.lanl.gov/orgs/d/d4/infra/sofia.html
5. Myriad (2005), http://www.crowddynamics.com