U.S. Intervention : Assessing the Probability of Success
研究1987年2月至1990年2月期间干预成功的次数，发现实际成功数高于随机预期，且协调干预和大额干预的成功概率更高。
A study showing that the number of observed intervention successes over the February 1987 to February 1990 period was greater than one would expect to see randomly, and that the probability of success increased when intervention was coordinated and when the dollar amount was large.