@article{AIF_1973__23_4_213_0,
     author = {Roger, Claude},
     title = {\'Etude des $\Gamma $-structures de codimension 1 sur la sph\`ere $S^2$},
     journal = {Annales de l'Institut Fourier},
     pages = {213--227},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {23},
     number = {4},
     year = {1973},
     doi = {10.5802/aif.488},
     zbl = {0269.58006},
     mrnumber = {50 #1262},
     language = {fr},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.488/}
}