[1] /. Kolomý: A note on the continuity properties of nonlinear operators. Comment. Math. Univ. Carolinae 8 (1967), 503-514. MR 0222726

[2] J. Kolomý: Differentiability of convex functionals and boundedness of nonlinear operators and functionals. Comment. Math. Univ. Carolinae 10 (1969), 91 - 114. MR 0248522

[3] J. Kolomý: A note on uniform boundedness principle for nonlinear operators. Comment. Math. Univ. Carolinae 10 (1969), 207-216.. MR 0246173

[4] J. Kolomý: Remarks on nonlinear operators and functionals. Comment. Math. Univ. Carolinae 10 (1969), 391-405. MR 0257738

[5] M. M. Vainberg: Variational methods for the study of nonlinear operators. Holden-Day, San Francisco, 1964. MR 0176364 | Zbl 0122.35501

[6] G. A. Suchomlinov: Analytic functionals. Bull. Mosk. gos. univ., Sev. A, T. 1 (1937), 1 - 19.

[7] J. L. Kelley, L Namioka, co-authors: Linear topological spaces. D. Van Nostrand Co., Inc., 1963. MR 0166578

[8] S. Banach: Théorie des operations linéaires. Monografje Maternatyczne, Warszaw 1932. Zbl 0005.20901

[9] M. Katětov: O normovaných vektorových prostorech. Rozpravy II. tř. České akad. 53, č. 45 (1944), 1-27. MR 0024068

[10] J. Kolomý: On the continuity properties of nonlinear operators and functionals. Comment. Math. Univ. Carolinae I0 (1969), 241-259. MR 0248523

[11] A. Alexiewicz W. Orlicz: On the differentials in Banach spaces. Ann. Soc. Pol. Math. 25 (1952), 95-99. MR 0055571

[12] M. M. Vainberg: Some questions of differential calculus in linear spaces. Uspechi mat. nauk, T. VII (1952), vyp. 4 (50), 55- 102. MR 0050800

[13] G. J. Minty: Monotone (nonlinear) operators in Hilbert space. Duke Math. J. 29 (1962), 341-346. MR 0169064 | Zbl 0111.31202