@article{DAN_1973_213_1_a8,
     author = {V. \`E. Lyantse},
     title = {Expansion in eigenfunctions of a one-dimensional first-order pseudodifferential operator with constant coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {38--41},
     publisher = {mathdoc},
     volume = {213},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_213_1_a8/}
}