This is an old revision of the document!
Original source has been online for many years, and can (currently) be found at http://www.itcca.it/peterlim/. As these things usually get taken down at some point because they are products of a single human being, I will mirror the articles here.
I can not contact Peter Lim because his e-mail address bounces. I will make a detailed attempt to contact him in the short future. Until then, the fact that he has not edited his webpage even to update his e-mail in something like twenty years leads me to believe I should mirror these pages before they go down. I will remove the pages upon request, but it is my intent to contact Mr. Lim and ask for permission ASAP.