~~NOCACHE~~
  @article{pereira09robot,
    Author = {Augusto Silva Pereira, Guilherme and Cunha de Araújo Pimenta, Luciano and Chaimowicz, Luiz and Ramos Fonseca, Alexandre and S. C. de Almeida, Daniel and de Queiroz Corrêa, Leonardo and Cardoso Mesquita, Renato and Campos, Mario Fernando Montenegro},
    Title = {Robot navigation in multi-terrain outdoor environments},
    Journal = {The International Journal of Robotics Research},
    Volume = {28},
    Pages = {685--700},
    Year = {2009}
  }
  
  @InProceedings{pereira06robot,
    Author = {Augusto Silva Pereira, Guilherme and Cunha de Araújo Pimenta, Luciano and Chaimowicz, Luiz and Ramos Fonseca, Alexandre and S. C. de Almeida, Daniel and de Queiroz Corrêa, Leonardo and Cardoso Mesquita, Renato and Campos, Mario Fernando Montenegro},
    Title = {Robot navigation in multi-terrain outdoor environments},
    BookTitle = {Proceedings of the International Simposium on Experimental Robotics (ISER'06)},
    Year = {2006}
  }