Bhardwaj, V. K., & Gupta, S. (2013). On the <em class="a-plus-plus">β</em&gt;-Dual of Banach-Space-Valued Difference Sequence Spaces. Ukrains’kyi Matematychnyi Zhurnal, 65(8), 1145–1151. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/2497