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@article{MZM_1988_43_1_a6, author = {N. B. Pogosyan}, title = {Summability to $+\infty$ of series in {Haar} subsystems}, journal = {Matemati\v{c}eskie zametki}, pages = {56--61}, publisher = {mathdoc}, volume = {43}, number = {1}, year = {1988}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1988_43_1_a6/} }
N. B. Pogosyan. Summability to $+\infty$ of series in Haar subsystems. Matematičeskie zametki, Tome 43 (1988) no. 1, pp. 56-61. http://geodesic.mathdoc.fr/item/MZM_1988_43_1_a6/