@incollection{AST_1984__118__125_0,
     author = {Berger, M. S.},
     title = {Variational principles for equilibrium figures of fluids without symmetry assumptions},
     booktitle = {Variational methods for equilibrum problems of fluids - Trento, 20-25 juin 1983},
     series = {Ast\'erisque},
     pages = {125--135},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {118},
     year = {1984},
     mrnumber = {761742},
     language = {en},
     url = {http://www.numdam.org/item/AST_1984__118__125_0/}
}