@article{RMI_2006_2006_1_a22, author = {Fraysse, Aur\'elia and Jaffard, St\'ephane}, title = {{\textquestiondown}C\'omo de suaves son casi todas las funciones en un espacio de {Sobolev?}}, journal = {Revista matem\'atica iberoamericana}, pages = {663-682}, publisher = {mathdoc}, volume = {22}, number = {2}, year = {2006}, language = {en}, url = {http://geodesic.mathdoc.fr/item/RMI_2006_2006_1_a22/} }