[1] ALEXIEWICZ A.: Functional Analysis. (in Polish), PWN, Warsaw, 1969.

[2] BESSAGA C., KLEE V.: Two topological properties of linear spaces. Israel J. Math. 2 (1964), 211-220. MR 0180825

[3] DANEŠ J.: Nonlinear operators and functionals. Thesis, Charles University, Prague, 1968 (in Czech).

[4] DANEŠ J.: Continuity properties of nonlinear mappings. Comment. Math. Univ. Carolinae 9 (1968), 353-364. MR 0236779

[5] DUNFORD N., SCHWARTZ J. T.: Linear Operators. Vol. I. Interscience Publ., New York, 1958. MR 0117523

[6] HILLE E., PHILLIPS R. S.: Functional Analysis and Semigroups. Amer. Math. Soc. Colloquium Publ., vol. XXXI, Providence, B. I., J957. Zbl 0078.10004

[7] KLEE V.: A note on topological properties of normed linear spaces. Proc. Amer. Math. Soc. 7 (1956), 735-737. MR 0078661 | Zbl 0070.11103

[8] KRASNOSELSKII M. A., RUTICKII Ia. B.: Convex Functions and Orlicz's Spaces. (in Russian), Gostehizdat, Moscow, 1956.

[9] SCHAEFER H. H.: Topological Vector Spaces. The Macmillan Comp., New York, 1966. MR 0193469 | Zbl 0141.30503

[10] ZEMÁNEK J.: Nowhere dense set which is finitely open. Comment. Math. Univ. Carolinae 11 (1970), 83-89. MR 0261329