@article{FAA_1997_31_4_a5,
     author = {A. L. Skubachevskii},
     title = {On {Normality} of {Some} {Elliptic} {Functional} {Differential} {Operators}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {60--65},
     publisher = {mathdoc},
     volume = {31},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1997_31_4_a5/}
}