@article {48, title = {Spiking neural P systems: An early survey}, journal = {International Journal of Foundations of Computer Science}, volume = {18}, year = {2007}, pages = {435-455}, publisher = {World Scientific}, address = {London, U.K.}, keywords = {68Q10 (AMSC), 68Q42 (AMSC), 68Q45 (AMSC), chomsky hierarchy, Membrane computing, normal form, P system, register machine, semilinear set, spiking neuron}, issn = {0129-0541}, doi = {10.1142/S0129054107004772}, url = {http://www.worldscinet.com/cgi-bin/details.cgi?id=voliss:ijfcs_1803\&type=toc}, author = {Gheorghe Paun and Mario J. P{\'e}rez-Jim{\'e}nez and Arto Salomaa} }