Attached Link: http://www.bryceanworlds.com/pages/tips_tricks.html

Yeah, that's not my tut, obviously, but one to keep bookmarked cuz its pretty good. I agree wholehartedly with Aldaron. Kitchen's book is the ONLY place I've seen the math equasions for the DTE. Also, if you go to www.brycetech.com and look for the Materials Lab link on the left side under Advanced, you'll be able to go through a rather advanced DTE tut. Its several pages long with a test at the end for those who really are into it. I think you'll find part of what you want as you get to the end.