Udo Neumann's new book, author of the excellent 'Performance Rock Climbing', new book has been released in English, The Art and Science of Bouldering (as an electronic pdf). By all accounts, I'd suspect it's excellent (I've only just grabbed a copy so will be tearing through it this week for use on any coached clients of mine), the author of The Circuit described it as:
"If you are serious about climbing and developing as a climber, BUY THIS BOOK!" Well maybe I should rephrase... "If you love climbing and want to be inspired BUY THE CIRCUIT! If you are all of the above and you are serious about developing as a climber, BUY THIS BOOK!"