@article{FAA_1991_25_4_a17,
     author = {K. Kh. Boimatov and A. G. Kostyuchenko},
     title = {Trace formula for polynomial operator pencils and its applications},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {90--92},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1991_25_4_a17/}
}