ICAR 2003 : proceedings of the 11th International Conference on Advanced Robotics
2003, June 30 - July 3 2003, University of Coimbra, Portugal / editors Urbano Nunes,
Anibal T. de Almeida, Antal K. Bejczy, 2003
Internet, http://authorities.loc.gov, 20071022
Internet, www.catalogue.bnf.fr, 20071022