[1] Cudia D. F.: The geometry of Banach spaces. Smoothness. Trans. Amer. Math. Soc. 110 (1964), 284-314. MR 0163143 | Zbl 0123.30701

[2] Giles J. R.: On the characterization of Asplund spaces. J. Austral. Math. Soc. (Ser.A) 32 (1982), 134-144. MR 0643437

[3] Kato T.: Nonlinear semigroups and evolution equations. J. Math. Soc. Japan 19 (1967), 508- 520. MR 0226230 | Zbl 0163.38303

[4] Kenderov P. S.: Monotone operators in Asplund spaces. C.R. Acad. Bulgare Sci 30 (1977), 963-964. MR 0463981 | Zbl 0377.47036

[5] Kolomý J.: Maximal monotone and accretive multivalued mappings and structure of Banach spaces. Function spaces, Proc. Int. Conf. Poznań 1986, Teubner-Texte zur Math. 103 (1988), 170-177. MR 1066532

[6] Kolomý J.: Fréchet differentiation of convex functions in a Banach space with a separable dual. Proc. Amer. Math. Soc. 91 (1984), 202-204. MR 0740171

[7] Preiss D., Zajíček L.: Stronger estimates of smallness of sets of Fréchet nondtfferentiability of convex functions. Proceedings of the 11-th Winter School, Supplement Rend. Circ. Mat. Palermo (Ser. II) (1984). MR 0744387

[8] Zajíček L.: Sets of $\sigma $-porosity and sets of $\sigma $-porosity$(q)$. Čas. Pěst. Mat. 101 (1976), 350-359. MR 0457731 | Zbl 0341.30026