1. L. S. Efremova and A. S. Fil’chenkov, “Topological transitivity of skew products on the plane with negative Schwarzian of the family of maps in the fibers,” Tr.MFTI 4 (4), 82–93 (2012).
2. L. S. Efremova and A. S. Fil’chenkov, “Boundary conditions for maps in fibers and topological transitivity of skew products of interval maps,” J. Math. Sci. (N. Y.) 208 (1), 109–114 (2015).
3. A. S. Fil’chenkov, Some Topologically Transitive Skew Products on Cells in Rn (n ≥ 2), Available from VINITI, No. 341-V2014 (2014) [in Russian].
4. W. de Melo and S. van Strien, One-Dimensional Dynamics, in Ergeb. Math. Grenzgeb. (3), Vol. 25 (Springer-Verlag, Berlin, 1996).
5. A. B. Katok and B. Hasselblatt, Introduction to the Modern Theory of Dynamical Systems (Cambridge Univ. Press, Cambridge, 1995).