The Scholarships Supported by the Excellence Initiative of the German federal and state governments. Scholarships Applications may be submitted anytime beforehand, but will be considered in a concerted selection process after the posted deadline. Results can be expected in the course of July 2011.
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It provides financial support during both phases (of course assuming adequate progress). During the preparatory phase starting after your BSc degree, this support comes in the form of scholarships (800 € per month) or teaching and research support contracts. During the research and dissertation phase, you are supported in the form of fellowships (rarely) or of research or teaching assistantships (about 1400 € per month in all cases).
More Detail : http://www.cs.uni-saarland.de/index.php?id=7&L=11%20%2Findex.php%3Fversion%3D..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd