1. Structure of Algebras;Albert,1939
2. Isomorphisms of Clifford extensions;Dade;Ann. of Math.,1970
3. Character values and Clifford extensions for finite groups;Dade,1974
4. Extending irreducible modules;Dade;J. Algebra,1981
5. Cohomology and Galois theory. I. Normality of algebras and Teichmüller's cocycle;Eilenberg;Trans. Amer. Math. Soc.,1948