F. Abel, E. Herder, G. Houben, und E. Leonardi. Proc. of International Workshop on Linking of User Profiles and Applications in the Social Semantic Web (LUPAS 2010) (2010)
S. Abney, R. Schapire, und Y. Singer. Proceedings of the 1999 Joint SIGDAT Conference on Empirical
Methods in Natural Language Processing and Very Large Corpora
(EMNLP/VLC-99), Seite 38--45. College Park, MD, ACL, (1999)