Principles and design of an intelligent system for information retrieval over the internet with a multimodal dialogue interface. - Hiroya Fujisaki; Hiroyuki Kameda; Sumio Ohno; Kenji Abe; Michio Iijima; Masayoshi Suzuki; Kazunari Taketa (EUROSPEECH, 1999)

Concept-based search and user modeling in information retrieval based on human-machine dialogue. - Kenji Abe; Michio Iijima; Kenji Katami; Masayoshi Suzuki; Kazunari Taketa; Sumio Ohno; Hiroya Fujisaki (RIAO, 2000)