1. H. Behncke, Automorphisms of 𝒜(Φ₂), notes.
2. Automorphic group representations;Blattner, Robert J.;Pacific J. Math.,1958
3. Non-isomorphic non-hyperfinite factors;Ching, Wai-mee;Canadian J. Math.,1969
4. A continuum of non-isomorphic non-hyperfinite factors;Ching, Wai-mee;Comm. Pure Appl. Math.,1970
5. Cahiers Scientifiques, Fasc. XXV;Dixmier, Jacques,1957