%0 Generic %D 2016 %T Minimal cooperation in polarizationless P systems with active membranes %A Luis Valencia-Cabrera %A David Orellana-Martín %A Agustín Riscos-Núñez %A Mario J. Pérez-Jiménez %I Fénix Editora %P 327-356 %U http://www.gcn.us.es/14bwmc_proceedings