@article{Szal:2011,
  author  = "B. Szal",
  title   = "On the rate of summability by matrix means in the generalized Hölder metric",
  journal = "Banach Center Publication",
  volume  = "Vol. 95",
  pages   = "359--368",
  year    = "2011",
  note    = "Institute of Mathematics, Polish Academy of Sciences, Warszawa",
}