@article {, title = {Membrane Computing (International Workshop, WMC-CDEA 2002, Revised Papers)}, year = {2003}, pages = {VIII+421}, publisher = {Springer-Verlag}, address = {Berl{\'\i}n, Alemania}, isbn = {3-540-00611-7}, author = {Gheorghe Paun and Grzegorz Rozenberg and Arto Salomaa and Claudio Zandron} }