@article{AIHPA_1968__8_3_287_0,
     author = {Gallavotti, G. and Miracle-Sole, S.},
     title = {A variational principle for the equilibrium of hard sphere systems},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {287--299},
     publisher = {Gauthier-Villars},
     volume = {8},
     number = {3},
     year = {1968},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1968__8_3_287_0/}
}