%0 Journal Article %A A. S. Krivosheev %A O. A. Krivosheeva %T Necessary condition of fundamental principle for invariant subspaces on unbounded convex domain %J Ufa mathematical journal %D 2023 %P 69-79 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2023_15_3_a4/ %G en %F UFA_2023_15_3_a4