@article{TMF_1977_33_1_a9,
     author = {V. M. Filev},
     title = {Spectrum of two-dimensional relativistic model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {119--125},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1977_33_1_a9/}
}