Dear everybody Hi :) I am new in FE and new in this list too , and have two queston : 1- I am intereseted in Adaptive refinement , General concepts. I've read "Error estimates and Adaptive FE Refinement" chapter from "The Finite Element Method , Forth edition" book by O.C.Zienkiewicz. (Publisher : McGRAW-HILL) But it's not enough, Would you please help me to know more about Minimzing error and related concepts? Where can I find more useful text ? (Papers,books,specially related pages or files in internet) 2- Do you know more FE related discussion list or newsgroup ? Sorry if my questions not related to topics of list. Thanks in advance Sicereley HYousefpour ---------------------------------------------------- Tired of slow web-mail? Try out http://zworg.com/?et %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%