@article{AIHPA_1976__25_2_183_0,
     author = {Hammad, Pierre},
     title = {Le r\^ole de l'\'energie libre pour des syst\`emes r\'egis par l'\'equation de {F\"okker-Planck}},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {183--196},
     publisher = {Gauthier-Villars},
     volume = {25},
     number = {2},
     year = {1976},
     mrnumber = {421540},
     zbl = {0342.60069},
     language = {fr},
     url = {http://www.numdam.org/item/AIHPA_1976__25_2_183_0/}
}