On the fine spectrum of the difference operator Delta on c0 and c. - Bilâl Altay; Feyzi Basar (Inf. Sci., 2004)

On the fine spectrum of the generalized difference operator B(r, s) over the sequence spaces c0 and c. - Bilâl Altay; Feyzi Basar (Int. J. Math. Math. Sci., 2005)

The σ-convergence and σ-core of double sequences. - Celal Çakan; Bilâl Altay; Mohammad Mursaleen (Appl. Math. Lett., 2006)

On the Euler sequence spaces which include the spaces lp and linfinity I. - Bilâl Altay; Feyzi Basar; Mohammad Mursaleen (Inf. Sci., 2006)

On the fine spectrum of the operator B(r, s, t) over c0 and c. - Hasan Furkan; Hüseyin Bilgiç; Bilâl Altay (Comput. Math. Appl., 2007)

Matrix transformations on some sequence spaces related to strong Cesàro summability and boundedness. - Bilâl Altay; Feyzi Basar; Eberhard Malkowsky (Appl. Math. Comput., 2009)

Multipliers for bounded l2-convergence of double sequences. - Erdinç Dündar; Bilâl Altay (Math. Comput. Model., 2012)

The Effects of Mobile Technology on Learning Performance and Motivation in Mathematics Education. - Serdal Poçan; Bilâl Altay; Cihat Yasaroglu (Educ. Inf. Technol., 2023)