@article{SL_1962__4__A1_0,
     author = {Lelong, Pierre},
     title = {\'El\'ements positifs d'une alg\`ebre ext\'erieure complexe avec involution},
     journal = {S\'eminaire Lelong. Analyse},
     note = {talk:1},
     pages = {1--22},
     publisher = {Secr\'etariat math\'ematique},
     volume = {4},
     year = {1962},
     zbl = {0138.06701},
     language = {fr},
     url = {http://archive.numdam.org/item/SL_1962__4__A1_0/}
}