@article{DAN_1976_229_4_a8,
     author = {G. F. Us},
     title = {The spectral decomposition of selfadjoint operators that are functions of operators acting on different variables},
     journal = {Doklady Akademii Nauk},
     pages = {812--815},
     publisher = {mathdoc},
     volume = {229},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_229_4_a8/}
}