@article {1771, title = {An optimization spiking neural P system for approximately solving combinatorial optimization problems}, journal = {International Journal of Neural Systems}, volume = {24}, year = {2014}, pages = {1-16}, publisher = {World Scientific}, address = {Singapore, Singapore}, issn = {0129-0657}, doi = {10.1142/S0129065714400061}, author = {Gexiang Zhang and Haina Rong and Ferrante Neri and Mario J. P{\'e}rez-Jim{\'e}nez} }