@article{MS_1975__139_3_a6,
     author = {{\CYRS}.{\CYRA}. {\CYRL}{\cyra}{\cyrp}{\cyrt}{\cyre}{\cyrv}},
     title = {{\CYRO} {\cyrp}{\cyro}{\cyrv}{\cyre}{\cyrd}{\cyre}{\cyrn}{\cyri}{\cyri} {\cyrp}{\cyrr}{\cyri} {\cyrb}{\cyro}{\cyrl}{\cyrsftsn}{\cyrsh}{\cyri}{\cyrh} {\cyrz}{\cyrn}{\cyra}{\cyrch}{\cyre}{\cyrn}{\cyri}{\cyrya}{\cyrh} {\cyrv}{\cyrr}{\cyre}{\cyrm}{\cyre}{\cyrn}{\cyri} {\cyrr}{\cyre}{\cyrsh}{\cyre}{\cyrn}{\cyri}{\cyrya} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}{\cyri} {{\CYRK}{\cyro}{\cyrsh}{\cyri}} {\cyrd}{\cyrl}{\cyrya} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya} $* ^{2}u/* t^{2}-* ^{2}u/* x^{2}+\ensuremath{\alpha} (x)u=0$},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {435--461},
     publisher = {mathdoc},
     volume = {139},
     number = {3},
     year = {1975},
     zbl = {0313.35054},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MS_1975__139_3_a6/}
}