1. Marie, J.: Nonlinear Diffusion Equations in Biology. Mir, Moscow (1983)
2. Kolmogorov, A.N., Petrovsky, I.G., Piskunov, N.S.: Study of the equation of diffusion coupled with an increase in the amount of substance and its application to a biological problem. Bull. Moscow State Univ. Math. Mech. 1, 1–25 (1937)
3. Aripov, M.: Method of Standard Equations for Solving Nonlinear Boundary Value Problems. Tashkent, Fan (1988)
4. Belotelov, N.V., Lobanov, A.I.: Population models with nonlinear diffusion. Math. Model. 12, 43–56 (1997)
5. Samarsky, A.A., Galaktionov, V.A., Kurdyumov, S.P., Mikhailov, A.S.: Modes with Sharpening in Problems for Quasilinear Parabolic Equations. Moscow, Science (1987)