@article{EsSaMuHu11,
  author={J. Espinoza and A. Sarmiento and R. Murrieta-Cid and S. Hutchinson},
  title={Motion Strategy for Finding an Object with a Mobile Manipulator in Thee-Dimensional Environments},
  journal={Journal of Advanced Robotics},
  month={August},
  pages={1627--1650},
  volume=25,
  number=13-14,
  year={2011}}