[1] M. Medveď:
Dynamical Systems. (Slovak). Veda, Bratislava 1988.
MR 0982929
[3] V. K. Melnikov:
On the stability of the center for the time periodic solutions. Trans. Moscow Math. Soc. V. 12 (1963), 3-56.
MR 0156048
[5] M. Golubitsky V. Guillemin:
Stable Mappings and their Singularities. Springer-Verlag, New York, Heidelberg, Berlin, 1973, Mir Moskva, 1977.
MR 0467801
[6] D. Henry:
Geometric Theory of Semilinear Parabolic Equations. LNM 840, Springer-Verlag, New York, Berlin, 1981.
MR 0610244 |
Zbl 0456.35001
[7] Z. Nitecki:
Differentiable Dynamics. The MIT Press, Cambridge, Massachusetts, London, 1971. Mir, Moskva, 1975.
MR 0649788 |
Zbl 0246.58012
[9] Th. Bröcker L. Lander:
Differentiable Germs and Catastrophes. Cambridge Univ. Press, Cambridge, 1975, Mir. Moskva, 1977.
MR 0494220
[10] S. N. Chow J. K. Hale:
Methods of Bifurcation Theory. Springer-Verlag, New York, Berlin, Heidelberg, 1982.
MR 0660633