Marjovi, AliMarques, Lino2014-03-102014-03-102014-03-10201310.1007/978-3-642-32723-0_4https://infoscience.epfl.ch/handle/20.500.14299/101620This paper presents a distributed multi-robot system to search for odor sources inside unknown environments. The robots cooperatively explore the whole environment and generate its topological map. The exploration method is a decentralized frontier based algorithm that is enhanced by considering odor concentration at each frontier inside its cost/gain function. The robots independently generate local topological maps and by transferring them to each other, they are able to integrate these maps and generate a whole global map. The proposed method was tested and validated in real reduced scale scenarios.text::book/monograph::book part or chapter