%0 Journal Article %A Leeuw, Karel De %A Mirkil, H. %T Algebras of differentiable functions in the plane %J Annales de l'Institut Fourier %D 1963 %P 75-89 %V 13 %N 2 %I Institut Fourier %C Grenoble %U http://www.numdam.org/articles/10.5802/aif.142/ %R 10.5802/aif.142 %G en %F AIF_1963__13_2_75_0