1. Sergey Brin and Lawrence Page. The Anatomy of a Large-Scale Hypertextual Web Search Engine. Computer Networks and ISDN Systems, 30(1–7):107–117, April 1998.
2. Ciro Catutto, Christoph Schmitz, Andrea Baldassarri, Vito D. P. Servedio, Vittorio Loreto, Andreas Hotho, Miranda Grahl, and Gerd Stumme. Network properties of folksonomies. AI Communications Journal, Special Issue on ”Network Analysis in Natural Sciences and Engineering” (im Druck), 2007.
3. Roy T. Fielding. Architectural Styles and the Design of Network-based Software Architectures. PhD thesis, University of California, Irvine, 2000.
4. B. Ganter. Algorithmen zur Formalen Begriffsanalyse. In B. Ganter, R. Wille, and K. E. Wolff, editors, Beiträge zur Begriffsanalyse, pages 241–254. B.I.Wissenschaftsverlag, 1987.
5. Bernhard Ganter and Rudolf Wille. Formale Begriffsanalyse: Mathematische Grundlagen. Springer, Heidelberg, 1996.