@article {, title = {Computing by Communication in Networks of Membranes}, journal = {International Journal of Foundations of Computer Science}, volume = {13}, year = {2002}, pages = {779-798}, publisher = {World Scientific}, address = {London, U.K.}, issn = {0129-0541}, author = {Andrei Paun and Gheorghe Paun and Grzegorz Rozenberg} }