von Neumann algebras and unbounded operators (in Greek)

Citation:

Katavolos A. von Neumann algebras and unbounded operators (in Greek). In: Anoussis M, Kotsakis S, Hatzisavvas N Operator Algebras and Quantum Mechanics (Proceedings of the third Summer School in Analysis, Geometry and Mathematican Physics). Thessaloniki : Ziti Publishers; 1997.