The relative Dixmier property for inclusions of von Neumann algebras of finite index

Popa, Sorin

Annales scientifiques de l'École Normale Supérieure, Volume 32 (1999) p. 743-767

Free-independent sequences in type $I{I}_1$ factors and related problems

Popa, Sorin

Astérisque, Recent advances in operator algebras - Orléans, 1992, (1995) p. 187-202

Entropy and index for subfactors

Pimsner, Mihai; Popa, Sorin

Annales scientifiques de l'École Normale Supérieure, Volume 19 (1986) p. 57-106