Hussein, Mushtaq, and Nagem Nagem. “A Study on the Bases of Space of Vector Valued Entire Multiple Dirichlet Series”. Iraqi Journal of Science, vol. 54, no. 3. Mathematics conf, Feb. 2024, pp. 749-56, https://www.ijs.uobaghdad.edu.iq/index.php/eijs/article/view/12456.