@article{SHC_1954-1955__7_1_A4_0,
     author = {Cartan, H.},
     title = {Constructions multiplicatives},
     journal = {S\'eminaire Henri Cartan},
     note = {talk:4},
     pages = {1--8},
     publisher = {Secr\'etariat math\'ematique},
     volume = {7},
     number = {1},
     year = {1954-1955},
     language = {fr},
     url = {http://archive.numdam.org/item/SHC_1954-1955__7_1_A4_0/}
}