Folks, Attached is the paper from Kass for your information. ChangChing -------------- next part -------------- A non-text attachment was scrubbed... Name: Steve Kass.pdf Type: application/pdf Size: 239263 bytes Desc: not available Url : http://lists.stevens.edu/pipermail/massspecgroup/attachments/20081215/f306fe02/SteveKass-0001.pdf