@article{FAA_1973_7_1_a19,
     author = {S. Ya. Yakubov},
     title = {On twofold completeness of inherent and adjoined elements of a quadratic operator bundle},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {92--94},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1973_7_1_a19/}
}