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    CGAL 4.7 - Handles and Circulators 
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International standard ISO/IEC 14882: Programming languages – C++. American National Standards Institute, 11 West 42nd Street, New York 10036, 1998.
David R. Musser and Atul Saini. STL Tutorial and Reference Guide: C++ Programming with the Standard Template Library. Addison-Wesley, 1996.