@article{MZM_1974_15_3_a5,
     author = {L. A. Shaginyan},
     title = {Summability of series with respect to {a~Haar} system by the $(C,1)$ method},
     journal = {Matemati\v{c}eskie zametki},
     pages = {393--404},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_15_3_a5/}
}