@article{MZM_2021_110_6_a13,
     author = {A. P. Kosarev and A. A. Shkalikov},
     title = {Spectral {Asymptotics} of {Solutions} of a $2\times 2$ {System} of {First-Order} {Ordinary} {Differential} {Equations}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {939--943},
     year = {2021},
     volume = {110},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2021_110_6_a13/}
}