%0 Journal Article %A Kh. D. Ikramov %T An attempt of spectral theory for the $*$-congruence transformations %J Zapiski Nauchnykh Seminarov POMI %D 2019 %P 114-119 %V 482 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2019_482_a6/ %G ru %F ZNSL_2019_482_a6