@article{FAA_1994_28_2_a7,
     author = {A. Yu. Konstantinov},
     title = {Multiparameter {Spectral} {Problems} and {Commuting} {Extensions} of {Symmetric} {Operators}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {55--57},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1994_28_2_a7/}
}