%0 Journal Article %A V. V. Volchkov %A Vit. V. Volchkov %T Overdetermined Neumann boundary value problem in unbounded domains %J Ufa mathematical journal %D 2020 %P 10-20 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UFA_2020_12_2_a1/ %G en %F UFA_2020_12_2_a1