@article{AIF_2005__55_7_2521_0,
     author = {Kassel, Christian and Schneider, Hans-J\"urgen},
     title = {Homotopy theory of {Hopf} {Galois} extensions},
     journal = {Annales de l'Institut Fourier},
     pages = {2521--2550},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {55},
     number = {7},
     year = {2005},
     doi = {10.5802/aif.2169},
     mrnumber = {2207392},
     zbl = {1090.16019},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.2169/}
}