Discovery and Retrieval of Logical Information Units in Web. - Keishi Tajima; Kenji Hatano; Takeshi Matsukura; Ryoichi Sano; Katsumi Tanaka (WOWS, 1999)

Discovery of Semantic Relationships among Web Pages Based on Web Topic Structures. - Takeshi Matsukura; Hiroyuki Kondo; Yoichi Hirata; Katsumi Tanaka (DS-9, 2001)