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EaSt, Version 2 Primary developers: Kyungman Kim, Cyrus Mehta, Sandro Pampallona, Anastasios Tsiatis, and Shailesh Vasundhra. Available from Cytel Software Corporation, 675 Massachusetts Ave., Cambridge, MA 98195. Standard price $895; academic price $695. PEST3 (Planning and Evaluation of Sequential Trials), Version 3 Primary developers: Hazel Brunier and John Whitehead. Available from the MPS Research Unit, University of Reading, Earley Gate, Reading RG6 6FN, United Kingdom. Standard price £700 (approx. $1,124); academic price £400 (approx. $642).
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Scott S. Emerson (1996) studied this question.
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