@article {2077, title = {Reaching efficiency through collaboration in membrane systems: dissolution, polarization and cooperation}, journal = {Theoretical Computer Science}, volume = {701}, year = {2017}, pages = {226-234}, doi = {http://dx.doi.org/10.1016/j.tcs.2017.04.015}, author = {Luis Valencia-Cabrera and David Orellana-Mart{\'\i}n and Miguel A. Mart{\'\i}nez-del-Amor and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Mario J. P{\'e}rez-Jim{\'e}nez} }