1. A. P. Shapiro, Upravlenie i informaciya 3, 96–118 (1972).
2. Biological populations obeying difference equations: Stable points, stable cycles, and chaos
3. B. P. Bezruchko, M. D. Prokhorov and E. P. Seleznyev, Prikladnaya nelineynaya dinamika 10, 47–67 (2002).
4. A. P. Kuznetsov, A. V. Savin, Yu. V. Sedova and L. V. Tyuryukina, Bifurcations of mappings, Nauka, Saratov, 2012.
5. Multistability in dynamic models of migration coupled populations with an age structure