%0 Journal Article
%A I. A. Krishtal
%A N. B. Uskova
%T Spectral properties of first-order differential operators with an involution and groups of operators
%J Sibirskie èlektronnye matematičeskie izvestiâ
%D 2019
%P 1091-1132
%V 16
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SEMR_2019_16_a139/
%G ru
%F SEMR_2019_16_a139