%0 Journal Article %A Anna Lempert %A Alexander Kazakov %A Quang Mung Le %T On Reserve and Double Covering Problems for the Sets With Non-Euclidean Metrics %J Yugoslav journal of operations research %D 2019 %P 69 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/YJOR_2019_29_1_a4/ %G en %F YJOR_2019_29_1_a4