%0 Journal Article %A A. G. Podgaev %A T. D. Kulesh %T Compactness theorems for problems with unknown boundary %J Dalʹnevostočnyj matematičeskij žurnal %D 2021 %P 105-112 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DVMG_2021_21_1_a8/ %G ru %F DVMG_2021_21_1_a8