1. Burnstein, Jeff, “Background on the U. S. Robotics Industry,” Robotic Industries Association, June 1985.
2. Smith, Donald N. and Wilson, Richard C., “Industrial Robots: A Delphi Forecast of Markets and Technology,” Society of Manufacturing Engineers and The University of Michigan, 1982.
3. Gevarter, William B., “An Overview of Artificial Intelligence and Robotics, Volume II — Robotics,” National Bureau of Standards, NBSIR 82-2479, March 1982.