@article{SM_2008_199_8_a0,
     author = {S. S. Volosivets},
     title = {Hardy and {Bellman} transformations of series with respect to multiplicative systems},
     journal = {Sbornik. Mathematics},
     pages = {1111--1137},
     year = {2008},
     volume = {199},
     number = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2008_199_8_a0/}
}