%0 Journal Article %A V. I. Malykhin %A N. N. Kholshchevnikova %T Independence of two set-theoretic statements in the theory of summation %J Matematičeskie zametki %D 1980 %P 869-882 %V 28 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_1980_28_6_a6/ %G ru %F MZM_1980_28_6_a6