@article{FAA_1973_7_1_a8,
     author = {M. L. Gorbachuk},
     title = {Completeness of the system of eigenfunctions and associated functions of a nonself-adjoint boundary value problem for a differential-operator equation of second order},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {68--69},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_1_a8/}
}