@article{FAA_2013_47_1_a8,
     author = {V. L. Ostrovskii and Yu. S. Samoilenko},
     title = {On {Pairs} of {Quadratically} {Related} {Operators}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {82--87},
     publisher = {mathdoc},
     volume = {47},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_2013_47_1_a8/}
}