Introduction to simulation and risk analysis, c1998: CIP surrogate p. 1 (Crystal ball)

Project management in practice, c2001: cover p. 4 (Crystal ball 2000) pref. (Decisioneering's Crystal ball 2000) accompanying CD (Crystal ball pro 2000)

ZD net reviews WWW Home page, Aug, 22, 2001: (Crystal ball pro consists of Crystal ball 4.0, Decisioneering's Excel Monte Carlo add-in, and OptiQuest for Crystal ball, a developer's kit that lets Visual Basic programmers use Crystal ball 4.0 with their custom applications, and a set of "extenders")