Jos ElfringM. J. G. van de MolengraftR. J. M. JanssenMaarten SteinbuchTwo level world modeling for cooperating robots using a multiple hypotheses filter.815-8202011ICRAhttps://doi.org/10.1109/ICRA.2011.5980219conf/icra/2011db/conf/icra/icra2011.html#ElfringMJS11