Kurbonova, Yulduz Rasulovna. “Hilbert Fazosidagi Chiziqli Operatorlar Va o’z-o’ziga qo’shma Operatorlar Spektri Haqida”. Science and Education 4, no. 2 (March 5, 2023): 19–33. Accessed May 6, 2024. https://openscience.uz/index.php/sciedu/article/view/4989.