Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1962_144_3_a12, author = {A. V. Strauss}, title = {Self-adjoint operators in an orthogonal sum of {Hilbert} spaces}, journal = {Doklady Akademii Nauk}, pages = {512--515}, publisher = {mathdoc}, volume = {144}, number = {3}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_144_3_a12/} }
A. V. Strauss. Self-adjoint operators in an orthogonal sum of Hilbert spaces. Doklady Akademii Nauk, Tome 144 (1962) no. 3, pp. 512-515. http://geodesic.mathdoc.fr/item/DAN_1962_144_3_a12/