Good Books on Qt

I currently evaluating Qt and want to make a quick start on this package. I recommend books are

1. Introduction to Design Patterns in C++ with Qt 4(2008)
Good to review C++ conecpts in a short time.
Evaluated version is different with the book published on 2006. Ebook can be downloaded here
http://lawand.wordpress.com/site-map/computer-science/e-books/introduction-to-design-patterns-in-cpp-with-qt-4/

2.  C++ GUI Programming with Qt4(2nd ed. 2008)
Good step by step exercises to be familiar with Qt.

3. Advanced Qt Programming(2010)
Updated reference and advanced topics.