Bourbon, W. T. (1989). A control-theory analysis of interference during social tracking. In W. A. Hershberger (Ed.), Volitional action: Conation and control. New York: Elsevier/North-Holland.
2.
Chong, E. (1988). Cooperation interpreted in terms of control theory. Unpublished master's thesis, Stephen F. Austin University. (Available from University Microfilms)
3.
Marken, R. S. (1986). Perceptual organization of behavior: A hierarchical control model of coordinated action. Journal of Experimental Psychology: Human Perception and Performance, 12, 267-276.
4.
Marken, R. S. , & Powers, W. T. (1989). Levels of intention in behavior. In W. A. Hershberger (Ed.), Volitional action: Conation and control. Amsterdam: Elsevier/North-Holland.
5.
Powers, W. T. (1973). Behavior: The control of perception. New York: Aldine de Gruyter.
6.
Powers, W. T. (1979). The nature of robots, Part 4: Looking for controlled variables. Byte, 4(9), 96-112.
7.
Robertson, R. J., Goldstein, D. M., Mermel, M., & Musgrave, M. (1987). Testing the self as a control system: Theoretical and methodological issues. Unpublished paper, Department of Psychology, Northeastern Illinois University.
8.
Runkel, P. J. (in press). Casting nets and testing specimens. New York: Praeger.
9.
Schlesinger, G. (1967). Natural kinds. In R. S. Cohen & M. W. Wartofsky (Eds.), Boston studies in the philosophy of science (Vol. 3, pp. 108-122). Dordrecht: Reidel.
10.
Schwartz, S. P. (Ed.). (1977). Naming, necessity, and natural kinds. Ithaca, NY: Cornell University Press.