@article{IM_1978__47_142573,
     author = {Ren\'ee Elkik},
     title = {Singularit\'es rationelles et d\'eformations.},
     journal = {Inventiones mathematicae},
     pages = {139--148},
     publisher = {mathdoc},
     volume = {47},
     year = {1978},
     zbl = {0363.14002},
     url = {http://geodesic.mathdoc.fr/item/IM_1978__47_142573/}
}