ANALELE STIINTIFICE ALE UNIVERSITATII AL I CUZA DIN IASI-SERIE NOUA-MATEMATICA, cilt.60, ss.51-56, 2014 (SCI İndekslerine Giren Dergi)
In this paper, a general theorem on vertical bar A; delta vertical bar(k) summability methods has been proved. This theorem also includes some new results.