@article{MZM_1984_36_5_a8,
     author = {N. E. Firsova},
     title = {Resonances of a hill operator, perturbed by an exponentially decreasing additive potential},
     journal = {Matemati\v{c}eskie zametki},
     pages = {711--724},
     publisher = {mathdoc},
     volume = {36},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1984_36_5_a8/}
}