1. J. Bochnak M. Coste M.-F. Roy Real Algebraic Geometry, Ergebnisse der Mathematik und ihrer Grenzgebiete Bd. 3 (Springer-Verlag, Berlin - Heidelberg, 1998).
2. Intersection theory for o-minimal manifolds;Berarducci;Ann. Pure Appl. Logic,2001
3. S. Dayal Higher Fréchet and discrete Gâteaux differentiability of n -convex functions on Banach spaces, in: Functional Analysis and Operator Theory, Proceedings of the International Conference held in Memory of U. N. Singh, New Delhi, India, 2-6 August, 1990, Lecture Notes in Mathematics Vol. 1511 (Springer, Berlin, 1992), pp. 154-171.
4. Sur l'integration des coefficients differentiels d'ordre supérieur;Denjoy;Fund. Math.,1935
5. L. van den Dries Tame Topology and O-minimal Structures, LMS Lecture Notes Vol. 248 (Cambridge Univ. Press, Cambridge, 1998).