@article{AlonsoKaehlerSMikhailovetal.2004, author = {Sergio Alonso and Ralf K{\"a}hler and Alexander S. Mikhailov and Francisco Sagu{\´e}s}, title = {Expanding scroll rings and negative tension turbulence in a model of excitable media}, journal = {Phys. Rev. E}, volume = {70}, number = {5}, pages = {056201}, doi = {10.1103/PhysRevE.70.056201}, year = {2004}, }