%0 Journal Article
%A L. N. Dudko
%A I. I. Kal'mushevskii
%T Conditions for similarity to the operator $I^2$ in terms of the characteristic matrix-valued function
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1976
%P 38-46
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1976_4_a3/
%G ru
%F IVM_1976_4_a3