Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MS_1950__68_3_a3, author = {{\CYRV}.{\CYRYA}. {\CYRK}{\cyro}{\cyrz}{\cyrl}{\cyro}{\cyrv}}, title = {{\CYRO} {\cyrp}{\cyro}{\cyrl}{\cyrn}{\cyrery}{\cyrh} {\cyrs}{\cyri}{\cyrs}{\cyrt}{\cyre}{\cyrm}{\cyra}{\cyrh} {\cyro}{\cyrr}{\cyrt}{\cyro}{\cyrg}{\cyro}{\cyrn}{\cyra}{\cyrl}{\cyrsftsn}{\cyrn}{\cyrery}{\cyrh} {\cyrf}{\cyru}{\cyrn}{\cyrk}{\cyrc}{\cyri}{\cyrishrt}}, journal = {Matemati\v{c}eskij sbornik}, pages = {351--364}, publisher = {mathdoc}, volume = {68}, number = {3}, year = {1950}, zbl = {0039.29302}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MS_1950__68_3_a3/} }
В.Я. Козлов. О полных системах ортогональных функций. Matematičeskij sbornik, Tome 68 (1950) no. 3, pp. 351-364. http://geodesic.mathdoc.fr/item/MS_1950__68_3_a3/