Notes on étale cohomology of number fields
Annales scientifiques de l'École Normale Supérieure, Serie 4, Volume 6 (1973) no. 4, p. 521-552 
@article{ASENS_1973_4_6_4_521_0,
     author = {Mazur, Barry},
     title = {Notes on \'etale cohomology of number fields},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     publisher = {Elsevier},
     volume = {Ser. 4, 6},
     number = {4},
     year = {1973},
     pages = {521-552},
     doi = {10.24033/asens.1257},
     zbl = {0282.14004},
     mrnumber = {49 \#8993},
     language = {en},
     url = {http://www.numdam.org/item/ASENS_1973_4_6_4_521_0}
}

Mazur, Barry. Notes on étale cohomology of number fields. Annales scientifiques de l'École Normale Supérieure, Serie 4, Volume 6 (1973) no. 4, pp. 521-552. doi : 10.24033/asens.1257. http://www.numdam.org/item/ASENS_1973_4_6_4_521_0/

[AV] M. Artin and J.-L. Verdier, Seminar on étale cohomology of number fields, Woods Hole, 1964.

[CG] J.-P. Serre, Cohomologie Galoisienne (4th ed.). (Lecture Notes in Maths., n° 5, Springer, 1973). | MR 53 #8030 | Zbl 0259.12011

[CL] J.-P. Serre, Corps Locaux, Hermann et Cie, Paris, 1962. | Zbl 0137.02601

[GR] A. Grothendieck, Technique de descente et théorèmes d'existence en géométrie algébrique. I. Généralités. Descente par morphismes fidèlement plats, Séminaire Bourbaki n° 190, 1959/1960, Benjamin, 1966. | Numdam | Zbl 0229.14007

[GT] M. Artin, Grothendieck Topologies, Harvard University, 1962. | Zbl 0208.48701

[P] G. Poitou, Cohomologie galoisienne des modules finis, Dunod, Paris, 1967. | MR 36 #2670 | Zbl 0161.04203

[SGAA] M. Artin, A. Grothendieck and J.-L. Verdier, Théorie des Topos et Cohomologie Etale des Schémas (SGA 4) (Lecture Notes in Maths., nos 269, 270 et 305, Springer, 1972/1973).

[Sh] S. S. Shatz, Profinite groups, Arithmetic, and Geometry (Ann. of Math. Studies, n° 67, Princeton, 1972). | MR 50 #279 | Zbl 0236.12002

[T] J. Tate, Duality theorems in Galois cohomology over number fields, (Proc. Intern. Cong. Stockholm, 1962, p. 288-295). | MR 31 #168 | Zbl 0126.07002