@article {, title = {Spiking Neural P Systems with Extended Rules}, journal = {Fourth Brainstorming Week on Membrane Computing }, volume = {I}, year = {2006}, month = {1/30/06-2/3/06}, pages = {241-265}, publisher = {F{\'e}nix Editora}, address = {Sevilla, Espa{\~n}a}, isbn = {84-611-0520-6}, author = {Haiming Chen and Tseren-Onolt Ishdorj and Gheorghe Paun and Mario J. P{\'e}rez-Jim{\'e}nez} }