@article {432, title = {No cycles in compartments. Starting from Conformon-P systems}, journal = {6th Brainstorming Week on Membrane Computing}, volume = {6}, year = {2008}, pages = {157-169}, publisher = {F{\'e}nix Editora}, address = {Sevilla, Spain}, abstract = {Starting from proofs of results about the computing power of conformon- P systems, we infer several results about the power of certain classes of tissue-like P systems with (cooperative) rewriting rules used in an asynchronous way, without cycles in compartments. This last feature is related to an important restriction appearing when dealing with lab implementations of P systems, that of avoiding local evolution loops of objects.}, isbn = {978-84-612-44 }, url = {http://www.gcn.us.es/6BWMC/volume/noLooopFin.pdf}, author = {Pierluigi Frisco and Gheorghe Paun} }