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@article{MS_1967__115_3_a3, author = {{\CYRYU}.{\CYRV}. {\CYRE}{\cyrg}{\cyro}{\cyrr}{\cyro}{\cyrv}}, title = {{\CYRP}{\cyrs}{\cyre}{\cyrv}{\cyrd}{\cyro}{\cyrd}{\cyri}{\cyrf}{\cyrf}{\cyre}{\cyrr}{\cyre}{\cyrn}{\cyrc}{\cyri}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyre} {\cyro}{\cyrp}{\cyre}{\cyrr}{\cyra}{\cyrt}{\cyro}{\cyrr}{\cyrery} {\cyrg}{\cyrl}{\cyra}{\cyrv}{\cyrn}{\cyro}{\cyrg}{\cyro} {\cyrt}{\cyri}{\cyrp}{\cyra}}, journal = {Matemati\v{c}eskij sbornik}, pages = {356--374}, publisher = {mathdoc}, volume = {115}, number = {3}, year = {1967}, zbl = {0161.29801}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1967__115_3_a3/} }
Ю.В. Егоров. Псевдодифференциальные операторы главного типа. Matematičeskij sbornik, Tome 115 (1967) no. 3, pp. 356-374. http://geodesic.mathdoc.fr/item/MS_1967__115_3_a3/