@article{RM_2016_71_1_a0,
     author = {A. R. Alimov and I. G. Tsar'kov},
     title = {Connectedness and solarity in problems of best and near-best approximation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1--77},
     publisher = {mathdoc},
     volume = {71},
     number = {1},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2016_71_1_a0/}
}