@article{SHC_1950-1951__3__A11_0,
     author = {Cartan, H.},
     title = {Espaces avec groupes d'op\'erateurs. {I} : notions pr\'eliminaires},
     journal = {S\'eminaire Henri Cartan},
     note = {talk:11},
     pages = {1--11},
     publisher = {Secr\'etariat math\'ematique},
     volume = {3},
     year = {1950-1951},
     language = {fr},
     url = {http://www.numdam.org/item/SHC_1950-1951__3__A11_0/}
}