we have uploaded to our homepage http://www.nanotechnology.hu our new paper entitled Tapasztó,Levente; Dumitrica,Traian; Kim,Sung,Jin; Nemes-Incze,Péter; Hwang,Chanyong; Biró,László,Péter: BREAKDOWN OF CONTINUUM MECHANICS FOR NANOMETRE-WAVELENGTH RIPPLING OF GRAPHENE; Nature Physics 8, 739(2012)