Plichko A. M. (1992) “Automatic continuity, bases and radicals in the metrized algebras ”, Ukrains’kyi Matematychnyi Zhurnal, 44(8), pp. 1129-1132. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/8046 (Accessed: 24November2024).