Kurka, Ondřej On Borel classes of sets of Fréchet subdifferentiability. (English) Zbl 1143.26007 Bull. Pol. Acad. Sci., Math. 55, No. 3, 201-209 (2007). Reviewer: Tamás Mátrai (Toronto) MSC: 26B05 54H05 PDF BibTeX XML Cite \textit{O. Kurka}, Bull. Pol. Acad. Sci., Math. 55, No. 3, 201--209 (2007; Zbl 1143.26007) Full Text: DOI OpenURL
Lipiński, J. S. Sur certains problèmes de Choquet et de Zahorski concernant les fonctions dérivées. (French) Zbl 0081.27903 Fundam. Math. 44, 94-102 (1957). Reviewer: A. Revuz MSC: 28-XX PDF BibTeX XML Cite \textit{J. S. Lipiński}, Fundam. Math. 44, 94--102 (1957; Zbl 0081.27903) Full Text: DOI EuDML OpenURL