@article{RM_1960_15_1_a8,
     author = {V. I. Volkov},
     title = {On conditions for convergence of sequences of linear positive operators in the space of continuous functions assigned on closed surfaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     year = {1960},
     volume = {15},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_1_a8/}
}