1. Ayupov, Sh.A, Rakhimov, A.A., Usmanov, ShM: Jordan, Real and Lie Structures in Operator Algebras. Kluw. Acad. Pub., MAIA 418, 235 (1997)
2. Ayupov, Sh.A., Rakhimov, A.A.: Real W*-algebras, Actions of groups and index theory for real factors. VDM publishing house ltd. Beau-Bassin, Mauritius. ISBN 978-3-639-29066-0, p. 138 (2010)
3. Breuer, M.: Fredholm theories in von Neumann algebras I. Math. Ann. 178, 243–254 (1968)
4. Connes, A.: Une classification des Facteurs de type III. Ann. Sc. Ec. Norm. Sup. 6, 133–252 (1973)
5. Giordano, T.: Antiautomorphismes involutifs des facteurs de von Neumann injectifs. Thèse, Universite de Neuchâtel, Switzerland, p 106 (1981)