Albeverio S, Ayupov SA, Zaitov AA, Ruziev JE. Algebras of unbounded operators over the ring of measurable functions and their derivations and automorphisms. MFAT. 2009;15(2):177-187. Accessed February 4, 2026. https://zen.imath.kiev.ua/index.php/mfat/article/view/417