[1] N. P. Bhatia, G. P. Szegö: Dynamical systems, stability theory and applications. Springer-Verlag, 1967. MR 0219843

[2] P. R. Fallone, Jr.: Some remarks concerning stable attractors. Czechoslovak Mathematical Journal, 20 (95), 1970, pp. 599-602. MR 0268874 | Zbl 0283.34046

[3] O. Hájek: Sections of dynamical systems in $E^2$. Czechoslovak Mathematical Journal, 15 (90), 1965, pp. 205-211. MR 0176181

[4] W. Hurewicz, H. Wallman: Dimension theory. Princeton University Press, 1948. MR 0006493 | Zbl 0036.12501