@article{MZM_1990_48_1_a12,
     author = {Yu. B. Orochko},
     title = {Spectral representation of a~hyperbolic evolutionary process connected with {a~Sturm--Liouville} differential expression},
     journal = {Matemati\v{c}eskie zametki},
     pages = {86--94},
     publisher = {mathdoc},
     volume = {48},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_1_a12/}
}