@article{AIF_2009__59_7_2709_0, author = {Morikawa, Shuji}, title = {On a general difference {Galois} theory {I}}, journal = {Annales de l'Institut Fourier}, pages = {2709--2732}, publisher = {Association des Annales de l{\textquoteright}institut Fourier}, volume = {59}, number = {7}, year = {2009}, doi = {10.5802/aif.2505}, mrnumber = {2649331}, zbl = {1194.12005}, language = {en}, url = {http://archive.numdam.org/articles/10.5802/aif.2505/} }