Clausen, A. (1973) How Congressmen Decide: A Policy Focus. New York: St. Martin's Press.
2.
Fenno, R. (1978) Home Style: House Members in Their Districts. Boston: Little, Brown.
3.
Froman, L. (1963) Congressmen and Their Constituencies. Skokie, IL: Rand McNally.
4.
Kingdom, J. (1973) Congressmen's Voting Decisions. New York: Harper & Row.
5.
Matthews, D. (1960) U.S. Senators and Their World. New York: Vintage.
6.
Ross, D.S. (1978) "Elementary process models: their place in international relations forecasting," pp. 172-180 in N. Choucri and T. Robinson (eds.) Forecasting in International Relations, San Francisco: Freeman.
7.
Shapiro, M. (1968) "The House and the federal role: a computer simulation of roll-call voting." Amer. Pol. Sci. Rev.62 (June): 494-517.
8.
Wayne, S., R. Cole, and J. Hyde (1979) "Advising the President on enrolled legislation ." Pol. Sci. Q.94 (Summer): 303-317.