@article{IVM_2000_2_a11,
     author = {V. I. Sumin and A. V. Chernov},
     title = {On some criteria for the quasinilpotency of functional operators},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {77--80},
     publisher = {mathdoc},
     number = {2},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2000_2_a11/}
}