%0 Journal Article %A A. I. Kozhanov %A N. N. Shadrina %T Boundary value problems with conjugation conditions for quasi-parabolic equations of the third order with a discontinuous sign--variable coefficient %J Sibirskie èlektronnye matematičeskie izvestiâ %D 2021 %P 599-616 %V 18 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SEMR_2021_18_1_a32/ %G en %F SEMR_2021_18_1_a32