Luo Xiao Dieter Wissmann Michael Brown Stefan Jablonski Information Extraction from the Web: System and Techniques. 195-224 2004 21 Appl. Intell. 2 http://dx.doi.org/10.1023/B:APIN.0000033637.51909.04 db/journals/apin/apin21.html#XiaoWBJ04