@article{IVM_2024_2_a5,
     author = {M. I. Muminov and I. N. Bozorov and T. Kh. Rasulov},
     title = {On the number of components of the essential spectrum of one $2\times2$ operator matrix},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {85--90},
     year = {2024},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2024_2_a5/}
}