Finding a Shortest Pair of Paths on the Plane with Obstacles and Crossing Areas.

Yoshiyuki Kusakari Hitoshi Suzuki Takao Nishizeki Finding a Shortest Pair of Paths on the Plane with Obstacles and Crossing Areas. 42-51 1995 conf/isaac/1995 ISAAC db/conf/isaac/isaac95.html#KusakariSN95 http://dx.doi.org/10.1007/BFb0015407