Spatiotemporal discrete Ginzburg-Landau solitons in two-dimensional photonic lattices D. Mihalache, D. Mazilu and F. Lederer Eur. Phys. J. Special Topics, 173 (2009) 255-266 Published online: 27 June 2009 DOI: 10.1140/epjst/e2009-01078-6