Implementation and evaluation of an adaptive neighborhood information retrieval system for mobile users. - Yoshiharu Ishikawa; Yuichi Tsukamoto; Hiroyuki Kitagawa (WISE Workshops, 2003)

Extracting Mobility Statistics from Indexed Spatio-Temporal Datasets. - Yoshiharu Ishikawa; Yuichi Tsukamoto; Hiroyuki Kitagawa (STDBM, 2004)