1. D. Henry, Geometric Theory of Semilinear Parabolic Equations (Springer-Verlag, Berlin–Heidelberg, 1981).
2. T. K. Sirazetdinov, Systems Stability with Distributed Parameters (Nauka, Moscow, 1987) [in Russian].
3. A. A. Shestakov, Generalized Direct Lyapunov Method for Systems with Distributed Parameters (Nauka, Moscow, 1990) [in Russian].
4. M. I. Gil’, Norm Estimations for Operator-Valued Functions and Applications (CTC Press, Boca Raton, 1995).
5. T. Puu, Nonlinear Economic Dynamics (Springer-Verlag, Berlin–Heidelberg, 1993).