@article{FAA_1979_13_3_a19,
     author = {Yu. B. Orochko},
     title = {Finite propagation velocity and essential self-adjointness of certain differential operators},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {95--96},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1979_13_3_a19/}
}