1. Besicovitch, A.S.: A net to hold a sphere. The Mathematical Gazzete 41, 106–107 (1957)
2. Davidson, C., Blake, A.: Caging planar objects with a three-finger one-parameter gripper. In: Internatinal Conference Robotics and Automation, pp. 2722–2727. IEEE Press, Los Alamitos (1998)
3. Kuperberg, W.: Problems on polytopes and convex sets. In: DIMACS Workshop on polytopes, January 1990, pp. 584–589 (1990)
4. Latombe, J.C.: Robot Motion Planning. Kluwer Academic Publishers, Dordrecht (1991)
5. Laumond, J.P.: Feasible trajectories for mobile robots with kinematic and environment constraints. In: Intelligent Autonomous Systems, pp. 346–354. North-Holland Publishing Co., Amsterdam (1987)