@article{SM_1980_36_3_a8,
     author = {L. A. Shaginyan},
     title = {On the summability to infinity of trigonometric series and series in the {Walsh} system},
     journal = {Sbornik. Mathematics},
     pages = {427--439},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {1980},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1980_36_3_a8/}
}