@article{MZM_1990_48_5_a15,
     author = {S. M. Barkar'},
     title = {Eigenvalues of a~boundary value problem in the open right half-plane},
     journal = {Matemati\v{c}eskie zametki},
     pages = {138--140},
     publisher = {mathdoc},
     volume = {48},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_5_a15/}
}