Francesco Bernardini Francisco José Romero-Campero Marian Gheorghe Mario J. Pérez-Jiménez A Modeling Approach Based on P Systems with Bounded Parallelism. 49-65 2006 conf/membrane/2006 Workshop on Membrane Computing http://dx.doi.org/10.1007/11963516_4 db/conf/membrane/membrane2006.html#BernardiniRGP06