1. Class Field Theory;Artin,1967
2. Pseudocompact algebras, profinite groups and class formations;Brumer;J. Algebra,1966
3. Cohomological Topics in Group Theory;Gruenberg,1970
4. Galois cohomology of algebraic number fields, VEB;Haberland,1978
5. Cohomology of group extensions;Hochschild;Transa. Amer. Math. Soc.,1953