1. Laumond, J.-P.: Feasible trajectories for mobile robots with kinematic and environment constraints, in Intelligent Autonomous Systems, (O.L. Hertzberger, and F.C.A. Groen, eds), pp. 346–354, 1987.
2. Murray, R.M., and Sastry, S.S.: Steering nonholonomic systems using sinusoids, Proc. Conf. on Decision and Control, pp. 2097–2101, Honolulu, Hawaii, 1990.
3. Lafferriere, G., and Sussmann, H. J.: A differential geometric approach to motion planning, in Nonholonomic Motion Planning, (Z.X. Li and J.F. Canny, eds.), pp. 235–270, 1993.
4. Bushnell, L., Tilbury, D., and Sastry, S.: Extended Goursat normal form with applications to nonholonomic motion planning, Proc. IEEE Conference on Decision and Control, San Antonio, Texus, 1993.
5. Nakamura, Y., and Mukherjee, R.: Bi-directional approach for nonholonomic path planning of space robots, in Robotics Research: the Fifth International Symposium (August 1989, Tokyo), MIT press, pp. 405–416, 1990.