Original poster: "Loudner, Godfrey" <gloudner-at-SINTE.EDU> I can't pull up the document. Can it be converted to one of: RICH TEXT WORD PLAN TEXT FORMAT? Is this something I can do???????????? Godfrey Loudner [1] This self potential formula is derived on p39 of http://www.ttc-cmc-dot-net/~fme/plates.12-24-00.ps.gz Paul Nicholson