@article{MZM_2010_88_2_a6,
     author = {A. I. Esina and A. I. Shafarevich},
     title = {Quantization {Conditions} on {Riemannian} {Surfaces} and the {Semiclassical} {Spectrum} of the {Schr\"odinger} {Operator} with {Complex} {Potential}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {229--248},
     publisher = {mathdoc},
     volume = {88},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2010_88_2_a6/}
}