1. Theory and practice of hierarchical control;Albus,1981
2. Hierarchical control for robots in an automated factory;Albus,1983
3. Concepts for a real-time sensory-interactive control system architecture;Barbera,1982
4. Real-time control systems for robots;Fitzgerald,1985
5. The automated manufacturing research facility of the National Bureau of Standards;Simpson;J. Manuf. Syst.,198?