Applied Mathematics Letters, cilt.22, sa.9, ss.1462-1466, 2009 (SCI-Expanded)
In this work it is shown that if C (α, β) and C (γ, δ) are double Cesàro matrices with α ≥ γ > - 1, β ≥ δ > - 1, then any double series that is {divides} C (γ, δ) {divides}k-summable is also {divides} C (α, β) {divides}k-summable, k ≥ 1. © 2009.