Some Dense Barrelled Subspaces of ... and Incomplete ...-Spaces. F.X. Catalan; I. Tweddle — 1994 Mathematica Scandinavica
On the Extreme Points of the Sum of Two Compact Convex Sets. T. HITSAIN; I. TWEDDLE — 1970 Mathematische Annalen
Countable codimensional subspaces of semiconvex spaces T. Husain; I. Tweddle — 1980 Commentationes Mathematicae The article contains no abstract
Density character, barrelledness and the closed graph theorem J. O. Popoola; I. Tweddle — 1979 Colloquium Mathematicae