Some of you have already worked around the bad URL that I circulated over the weekend. The correct spelling is: http://www.ctcms.nist.gov/~jdbarnes I apologize for the confusion. John D. Barnes Phone: 301-975-6786 Polymer Mechanics and Structure Group FAX: 301-977-2018 Bldg 224, Rm A209 email: john.barnes at nist.gov Natl Inst Stds and Tech Gaithersburg, MD 20899