%0 Journal Article %A A. R. Alimov %T Selections of the best and near-best approximation operators and solarity %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 2018 %P 17-25 %V 303 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_2018_303_a1/ %G ru %F TM_2018_303_a1