no. 2
Opérations cohomologiques, III
Séminaire Henri Cartan, Tome 7 (1954-1955) no. 2, Exposé no. 16, 14 p. 
@article{SHC_1954-1955__7_2_A5_0,
     author = {Cartan, Henri},
     title = {Op\'erations cohomologiques, {III}},
     journal = {S\'eminaire Henri Cartan},
     note = {talk:16},
     publisher = {Secr\'etariat math\'ematique},
     volume = {7},
     number = {2},
     year = {1954-1955},
     language = {fr},
     url = {http://archive.numdam.org/item/SHC_1954-1955__7_2_A5_0/}
}
TY  - JOUR
AU  - Cartan, Henri
TI  - Opérations cohomologiques, III
JO  - Séminaire Henri Cartan
N1  - talk:16
PY  - 1954-1955
DA  - 1954-1955///
VL  - 7
IS  - 2
PB  - Secrétariat mathématique
UR  - http://archive.numdam.org/item/SHC_1954-1955__7_2_A5_0/
LA  - fr
ID  - SHC_1954-1955__7_2_A5_0
ER  - 
Cartan, H. Opérations cohomologiques, III. Séminaire Henri Cartan, Tome 7 (1954-1955) no. 2, Exposé no. 16, 14 p. http://archive.numdam.org/item/SHC_1954-1955__7_2_A5_0/

[1] S. Eilenberg-S. Mac Lane, On the groups H(π , n) , II (Annals of Math. 60, 1954, p. 49-139). | Zbl 0055.41704