@article{MZM_1990_48_2_a20,
     author = {M. S. Eremin},
     title = {Spectral function of the {Sturm--Liouville} equation with an impurity potential that is bounded on the half-axis},
     journal = {Matemati\v{c}eskie zametki},
     pages = {151--153},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_2_a20/}
}