1. Amidon, E. and N. Flanders (1963) "Interaction analysis as a feedback system," pp. 121-140 in E. Amidon and J. Hough (eds.) Interaction Analysis: Theory, Research and Application. Reading, Mass.: Addison-Wesley.
2. Bales, R.F. (1953) "The equilibrium problem in small groups," pp. 111-161 in T. Parsons et al. Working Papers in the Theory of Action. New York: Free Press.
3. Sensitization in Panel Design: A Coorientational Experiment