autores Cristina Manuela Peixoto dos Santos Ferreira, M.J. Oliveira, M. Cristina P Santos Matos, V. Oliveira, Miguel Costa, L. Santos, C.P. Costa, L. Matos, V. Ferreira, M. Matos, V.
Digital Object Identifier (DOI) https://doi.org/10.1109/icra.2013.6631012 https://doi.org/10.1109/iros.2011.6048438 https://doi.org/10.1109/iros.2011.6094819 https://doi.org/10.1109/iros.2011.6094819