Krasniqi, X.
(2019).
 On $\varphi -|A,\delta |_k$ summability of orthogonal series.
<em>Acta Mathematica Universitatis Comenianae, 89</em>(1), 161-168.
Retrieved from <a href="http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/amuc/article/view/1072" target="_new">http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/amuc/article/view/1072</a>