%0 Journal Article %A Mustapha, Sami %A Vigneron, François %T Construction of Sobolev spaces of fractional order with sub-riemannian vector fields %J Annales de l'Institut Fourier %D 2007 %P 1023-1049 %V 57 %N 4 %I Association des Annales de l’institut Fourier %U https://doi.org/10.5802/aif.2285 %R 10.5802/aif.2285 %G en %F AIF_2007__57_4_1023_0