@article{MAN_1905__60_158199,
     author = {Serge Bernstein},
     title = {Sur la d\'eformation des surfaces},
     journal = {Mathematische Annalen},
     pages = {434--436},
     publisher = {mathdoc},
     volume = {60},
     year = {1905},
     zbl = {36.0672.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1905__60_158199/}
}