[1] M. S. Bazaraa J. J. Goode M. Z. Nashed: On the cones of tangents with applications to mathematical programming. Ј. Opt. Theory Appl., 13 (1974), 389-426. MR 0366398

[2] H. Cartan: Calculus différentiel. Formes differentielles. Herman, Paris 1967.

[3] J. Daneš J. Durdil: A note on geometric characterization os Fréchet differentiability. Comm. Math. Univ. Carolinae, 17 (1976), 195-204. MR 0415663

[4] J. Durdil: On the geometric characterization of differentiability I. Comm. Math. Univ. Carolinae, 15 (1974), 521-540. MR 0426019 | Zbl 0289.58004

[5] J. Durdil: On the geometric characterization of differentiability II. Comm. Math. Univ. Carolinae, 15 (1974), 727-744. MR 0426019 | Zbl 0294.58003

[6] M. Fabian: Concerning a geometrical characterization of Fréchet differentiability. Časop. Pěst. Mat., 104 (1979), 45-64. MR 0523572 | Zbl 0393.46035

[7] M. Fabian: Theory of Fréchet and Gâteaux cones and nonlinear analysis. Technical Repoгt ÚVT ČVUT - 3/1977.

[8] M. Fabian: Exponential stability of differential inclusions. Acta Polytechnica, (1979), 39-46.

[9] T. M. Flett: On differentiation in normed vector spaces. Ј. London Math. Soc., 42 (1967), 523-533. MR 0215093

[10] Zs. Harnos: On the geometric characterization of differentiation in normed vector spaces. Ann. Univ. Sc. Budepestiensis, 21 (1978), 55 - 64. MR 0536202 | Zbl 0408.46032

[11] K. Kuratowski: Topology, Volume I. Academic Press, New York, London 1966. MR 0217751

[12] J. P. Penot: Extremisation et optimisation. Cours ďanalyse fonctionelle appliqué. Pau (Octobre 1973 - Јanvieг 1974), preprint. MR 0649629

[13] C. Ursescu: Tangent sets and differentiable functions. Banach Center Publications, Vol. 1., Proc. Conf. Zakopané 1974, Warszawa 1976, 151 - 155.

[14] J. Warga: Optimal control of differential and functional equations. Academic Press, New Yoгk 1973. MR 0372708

[15] S. Yamamuro: Differential calculus in topological linear spaces. Lecture Notes in Mathematics 374, Springer Verlag, Berlin, Heidelberg, New York 1974. MR 0488118 | Zbl 0276.58001