%0 Journal Article %A A. A. Nesterenko %A V. M. Khametov %A E. A. Shelemekh %T Existence Conditions for Extremal Probability Measures on Polish Spaces and Some of Their Properties %J Matematičeskie zametki %D 2021 %P 470-474 %V 109 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2021_109_3_a12/ %G ru %F MZM_2021_109_3_a12