1. On increasing sequences of absolutely convex sets in locally convex spaces;De Wilde, M.;Math. Ann.,1971
2. J. C. Ferrando, M. López Pellicer and L. M. Sánchez Ruiz, Metrizable Barrelled Spaces, Pitman RNMS 332, Longman, 1995.
3. Two new classes of locally convex spaces;Husain, Taqdir;Math. Ann.,1966
4. Some forms of the closed graph theorem;Kalton, N. J.;Proc. Cambridge Philos. Soc.,1971
5. Die Grundlehren der mathematischen Wissenschaften, Band 159;Köthe, Gottfried,1969