Proximity and Motion Planning on l_1-Embeddable Tilings. - Norie Fu; Akihiro Hashikura; Hiroshi Imai (ISVD, 2011)

Geometrical Treatment of Periodic Graphs with Coordinate System Using Axis-fiber and an Application to a Motion Planning. - Norie Fu; Akihiro Hashikura; Hiroshi Imai (ISVD, 2012)

Proximity and Motion Planning on ℓ1-Rigid Planar Periodic Graphs. - Norie Fu; Akihiro Hashikura; Hiroshi Imai (Trans. Comput. Sci., 2013)