@article{DAN_1988_300_1_a0,
     author = {Dzh. \`E. Allakhverdiev and R. M. Dzhabarzade},
     title = {The spectrum of a multiparameter system and a spectral theorem},
     journal = {Doklady Akademii Nauk},
     pages = {11--13},
     publisher = {mathdoc},
     volume = {300},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_300_1_a0/}
}