Social Network Applications using Cellular Phones with E-mail Function. - Hirokazu Tomiyasu; Takuya Maekawa; Takahiro Hara; Shojiro Nishio (ICDE Workshops, 2005)

GeoNote.net: A Social Network System for Geographic Information. - Kotaro Nakayama; Takuya Maekawa; Hirokazu Tomiyasu; Takahiro Hara; Shojiro Nishio (MDM, 2006)

Profile-based Query Routing in a Mobile Social Network. - Hirokazu Tomiyasu; Takuya Maekawa; Takahiro Hara; Shojiro Nishio (MDM, 2006)