%0 Journal Article %T Unusual by duration and shape of the flare in blazar 3C454.3 %A Volvach, A.. %A Volvach, L.. %A Larionov, M.. %K active galactic nuclei, black holes, gravitational waves %J Infocommunications and Radio Technologies %D 2020 %N 3 %P 11 %I Federal State Educational Institution of Higher Education Sevastopol State University