30.04.09
Konraad Elst
Links referenced by James in comment:
James said,
30.04.09 at 1:17 am ยท
Sorry, here is the complete paper from the google link:page 1: http://koenraadelst.voi.org/articles/aid/keaitlin1.html
page 2: http://koenraadelst.voi.org/articles/aid/keaitlin2.html