Regularity, barrelledness and dual strong unions in locally convex spaces. Bella Tsirulnikov — 2005 RACSAM
Boundedly completed subspaces in locally convex spaces. Bella Tsirulnikov — 1981 Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
Quasi-distinguished and boundedly completed locally convex spaces. Bella Tsirulnikov — 1981 Revista de la Real Academia de Ciencias Exactas Físicas y Naturales
Barrelledness and the Supremum of Two Locally Convex Topologies. Marc de Wilde; Bella Tsirulnikov — 1979 Mathematische Annalen