1. Introduction to the Theory of Stability;Barbashin,1970
2. Computing Methods, vol. II;Berezin,1964
3. Bifurcation analysis of an impact model for forest fire prediction;Bizzari;Int. J. Bifurc. Chaos,2008
4. On Some Statistical Methods in Mathematical Physics;Bogoliubov,1945
5. The Application of Methods of Nonlinear Mechanics in the Theory of Stationary Oscillations;Bogoliubov,1934