Dragomir, Sever S. “A Characterization of Reflexivity”. Rev. Anal. Numér. Théor. Approx. 25, no. 1 (August 1, 1996): 101–103. Accessed November 25, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1996-vol25-nos1-2-art10.