@article{FAA_1994_28_2_a12,
     author = {Yu. B. Orochko},
     title = {Examples of {Symmetric} {Differential} {Operators} with {Infinite} {Deficiency} {Indices} on the {Line}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {69--72},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1994_28_2_a12/}
}