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@article{MS_1981__156_3_a5, author = {{\CYRYU}.{\CYRS}. {\CYRB}{\cyra}{\cyrr}{\cyrk}{\cyro}{\cyrv}{\cyrs}{\cyrk}{\cyri}{\cyrishrt} and {\CYRV}.{\CYRI}. {\CYRYU}{\cyrd}{\cyro}{\cyrv}{\cyri}{\cyrch}}, title = {{\CYRS}{\cyrp}{\cyre}{\cyrk}{\cyrt}{\cyrr}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyre} {\cyrs}{\cyrv}{\cyro}{\cyrishrt}{\cyrs}{\cyrt}{\cyrv}{\cyra} {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyra} {\cyrk}{\cyrr}{\cyra}{\cyre}{\cyrv}{\cyrery}{\cyrh} {\cyrz}{\cyra}{\cyrd}{\cyra}{\cyrch}}, journal = {Matemati\v{c}eskij sbornik}, pages = {438--450}, publisher = {mathdoc}, volume = {156}, number = {3}, year = {1981}, zbl = {0469.34018}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1981__156_3_a5/} }
Ю.С. Барковский; В.И. Юдович. Спектральные свойства одного класса краевых задач. Matematičeskij sbornik, Tome 156 (1981) no. 3, pp. 438-450. http://geodesic.mathdoc.fr/item/MS_1981__156_3_a5/