1. Virtual humans: thirty years of research, what next?;Magnenat-Thalmann;The Visual Computer,2005
2. Particle swarm optimization;Kennedy,1995
3. Flocks, herds, and schools: a distributed behavioral model;Reynolds;Computer Graphics,1987
4. Steering behaviors for autonomous characters;Reynolds,1999
5. Crowd simulation in immersive space management;Bouvier,1996