@incollection{AST_1987__154-155__255_0,
     author = {El Soufi, Ahmed},
     title = {Immersions minimales sph\'eriques : restrictions sur la courbure et la codimension},
     booktitle = {Th\'eorie des vari\'et\'es minimales et applications},
     series = {Ast\'erisque},
     pages = {255--266},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {154-155},
     year = {1987},
     mrnumber = {955069},
     zbl = {0635.53044},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1987__154-155__255_0/}
}