Restrictions of unitary representations to subgroups and Ergodic theory: Group extensions and group cohomology

Moore, C. C. (2008). Restrictions of unitary representations to subgroups and Ergodic theory: Group extensions and group cohomology. In Group Representations in Mathematics and Physics (pp. 1–35). Springer Berlin Heidelberg. https://doi.org/10.1007/3-540-05310-7_25