@article{AIF_2011__61_4_1493_0,
     author = {Granier, Anne},
     title = {A {Galois} $D$-groupoid for $q$-difference equations},
     journal = {Annales de l'Institut Fourier},
     pages = {1493--1516},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {61},
     number = {4},
     year = {2011},
     doi = {10.5802/aif.2648},
     zbl = {1247.39008},
     mrnumber = {2951501},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/aif.2648/}
}