@article{SSL_1954-1955__1__A9_0,
     author = {Lazard, M.},
     title = {Th\'eorie des r\'epliques. Crit\`ere de Cartan},
     journal = {S\'eminaire "Sophus Lie"},
     publisher = {Secr\'etariat math\'ematique},
     volume = {1},
     year = {1954-1955},
     note = {talk:6},
     language = {fr},
     url = {http://www.numdam.org/item/SSL_1954-1955__1__A9_0}
}

Lazard, M. Théorie des répliques. Critère de Cartan. Séminaire "Sophus Lie", Volume 1 (1954-1955) , Talk no. 6, 9 p. http://www.numdam.org/item/SSL_1954-1955__1__A9_0/