Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1950__68_1_a2, author = {{\CYRA}. {\CYRT}{\cyri}{\cyrh}{\cyro}{\cyrn}{\cyro}{\cyrv}}, title = {{\CYRO} {\cyrk}{\cyrr}{\cyra}{\cyre}{\cyrv}{\cyrery}{\cyrh} {\cyru}{\cyrs}{\cyrl}{\cyro}{\cyrv}{\cyri}{\cyrya}{\cyrh}, {\cyrs}{\cyro}{\cyrd}{\cyre}{\cyrr}{\cyrzh}{\cyra}{\cyrshch}{\cyri}{\cyrh} {\cyrp}{\cyrr}{\cyro}{\cyri}{\cyrz}{\cyrv}{\cyro}{\cyrd}{\cyrn}{\cyrery}{\cyre} {\cyrp}{\cyro}{\cyrr}{\cyrya}{\cyrd}{\cyrk}{\cyra}, {\cyrp}{\cyrr}{\cyre}{\cyrv}{\cyrery}{\cyrsh}{\cyra}{\cyryu}{\cyrshch}{\cyre}{\cyrg}{\cyro} {\cyrp}{\cyro}{\cyrr}{\cyrya}{\cyrd}{\cyro}{\cyrk} {\cyru}{\cyrr}{\cyra}{\cyrv}{\cyrn}{\cyre}{\cyrn}{\cyri}{\cyrya}}, journal = {Matemati\v{c}eskij sbornik}, pages = {35--56}, publisher = {mathdoc}, volume = {68}, number = {1}, year = {1950}, zbl = {0041.06601}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1950__68_1_a2/} }
А. Тихонов. О краевых условиях, содержащих производные порядка, превышающего порядок уравнения. Matematičeskij sbornik, Tome 68 (1950) no. 1, pp. 35-56. http://geodesic.mathdoc.fr/item/MS_1950__68_1_a2/