@article{MZM_2015_98_6_a1,
     author = {D.I. Borisov},
     title = {The {Emergence} of {Eigenvalues} of a $\mathcal{PT}${-Symmetric} {Operator} in a {Thin} {Strip}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {809--823},
     publisher = {mathdoc},
     volume = {98},
     number = {6},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2015_98_6_a1/}
}