External Links

    Journal: IEE Proceedings - Software

    Volume 151, Issue 6

    257 -- 264G. Barla-Szabo, Bruce W. Watson, Derrick G. Kourie. Taxonomy of directed graph representations
    267 -- 279J. Ben Schafer, Joseph A. Konstan, John Riedl. View through MetaLens: usage patterns for a meta-recommendation system
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