[1]
T. H. Rasulov, M. I. Muminov, and M. Hasanov, “On the spectrum of a model operator in Fock space”, MFAT, vol. 15, no. 4, pp. 369–383, Dec. 2009, Accessed: Dec. 16, 2025. [Online]. Available: https://zen.imath.kiev.ua/index.php/mfat/article/view/431