Wang, J. and Li, J. and Wiederhold, G. and Firschein, O. (1998) System for Classifying Objectionable Websites. Technical Report. Stanford InfoLab. (Publication Note: 5th International Conference (IDMS'98), Thomas Plagemann and Vera Goebel (Eds.), Oslo, Norway, 113-124, Springer-Verlag LNCS 1483, September 1998)