PfEFFER Version 2/Pro
Developers: Geoff Bohling, John Doveton, Willard Guy, W. Lynn Watney, and Saibal Bhattacharya
in collaboration with 14 companies,
U.S. Department of Energy,
Kansas Technology Enterprise Corporation
Release date of Version 2.0/Pro: February, 1998
Runs under Excel 97, Excel 2000, PfEFFER 2.0 add-ins and examples require 2 MB of disk space.