@article{AIF_1963__13_2_75_0,
     author = {Leeuw, Karel De and Mirkil, H.},
     title = {Algebras of differentiable functions in the plane},
     journal = {Annales de l'Institut Fourier},
     pages = {75--89},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {13},
     number = {2},
     year = {1963},
     doi = {10.5802/aif.142},
     mrnumber = {29 #1550},
     zbl = {0131.33301},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.142/}
}