@PHDTHESIS{Pereira03T,
   AUTHOR = {Guilherme Augusto Silva Pereira},
   TITLE = {Navigation and Control of Cooperative Mobile Robots: An Approach Based on Graph Connectivity (In Portuguese)},
   school = {{Computer Science Department of the Federal University of Minas Gerais}},
   YEAR = {2003},
   month = {Novembro},
   address = {Belo Horizonte, MG, Brazil},
}