could you please clarify?
"the" standard?
The last couple of impression championships (in the Netherlands and Germany) were done on ABUS C83 euro locks.
That kinda makes it the defacto standard.
Like a stated before :
if you want to LEARN the craft, i would recommend (besides LOTS of practice)http://www.tresoroeffnung.de/buch.php
by Oliver Diederichsen. A visual guide to impressioning (and as he is the winner of the last German championship he knows his stuff)
The site is in German, so is the original book; make sure to order the English version.
If you happen to be in Europe in in about a month or two, swing by HAR for a workshop!
(sorry for the late reply, just came back from Aruba)