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References:
[1] Aczél J.: Lectures on functional equations and their applications. Academic Press, New York and London, 1966. MR 0208210
[2] Boman J.: Differentiability of a function and of its compositions with functions of one variable. Math. Scand. 20 (1967), 249-268. MR 0237728 | Zbl 0182.38302
[3] Dugundji J.: Topology. Boston 1967. MR 0193606
[4] Neuman F.: A note on smoothness of the Stäckel transformation. to appear.
[5] Neuman F.: Geometrical approach to linear differential equations of the $n$-th order. Rend Mat. 5 1972, 579-602. MR 0324141 | Zbl 0257.34029
[6] Stäckel P.: Über Transformationen von Differentialgleichungen. J. Reine Angew. Math. 111 1893,290-302.
[7] Wilczynski E. J.: Projective differential geometry of curves and ruled surfaces. B. G. Teubner, Leipzig 1906.
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