A Quantum Algorithm for Searching Web Communities. - Mayumi Oto; Masami Takata; Hiroaki Yoshida; Kazuki Joe (PDPTA, 2002)

On a Geometric Structure of Pure Multi-qubit Quantum States and Its Applicability to a Numerical Computation. - Kimikazu Kato; Mayumi Oto; Keiko Imai; Hiroshi Imai (ISVD, 2006)

Computational Geometry Analysis of Quantum State Space and Its Applications. - Kimikazu Kato; Mayumi Oto; Hiroshi Imai; Keiko Imai (Generalized Voronoi Diagram, 2008)