Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1979_13_4_a16, author = {A. N. Kochubei}, title = {Symmetric operators commuting with a family of unitary operators}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {77--78}, publisher = {mathdoc}, volume = {13}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1979_13_4_a16/} }
A. N. Kochubei. Symmetric operators commuting with a family of unitary operators. Funkcionalʹnyj analiz i ego priloženiâ, Tome 13 (1979) no. 4, pp. 77-78. http://geodesic.mathdoc.fr/item/FAA_1979_13_4_a16/