%0 Journal Article %A I. V. Izmest'ev %T Discrete game problem with ring-shaped terminal set %J Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki %D 2020 %P 18-30 %V 30 %N 1 %U http://geodesic.mathdoc.fr/item/VUU_2020_30_1_a1/ %G ru %F VUU_2020_30_1_a1