Marra, R.F., C.W. Ostrom and D.M. Simon. 1990. Foreign policy and presidential popularity: Creating windows of opportunity in the perpetual election. Journal of Conflict Resolution 34 (4): 588-623.
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Marra, R. F., Ostrom, C. W., Simon, D. M. (1990). Foreign policy and presidential popularity: Creating windows of opportunity in the perpetual election. Journal of Conflict Resolution, 34(4), pp. 588-623.
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