Booz,Allen,and Hamilton?(1982)

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• Booz,Allen,and Hamilton?(1982)
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• Duerr(1986)
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• Wind,Mahajan,and Bayless(1990)
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• Second-but-better??
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Henard and Szymanski (2001)
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Cooper (1984)
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57 65 74 27
???(Elrod and Kelman 1987)
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57 70 65 26