@article{SJ_1959-1960__3__A7_0,
     author = {Souriau, Jean-Marie},
     title = {Mati\`ere parfaite en relativit\'e g\'en\'erale},
     journal = {S\'eminaire Janet. M\'ecanique analytique et m\'ecanique c\'eleste},
     note = {talk:7},
     pages = {1--11},
     publisher = {Secr\'etariat math\'ematique},
     volume = {3},
     year = {1959-1960},
     zbl = {0103.44704},
     language = {fr},
     url = {http://www.numdam.org/item/SJ_1959-1960__3__A7_0/}
}