Global existence of Cauchy problem for Boussinesq paradigm equation. - Nikolai Kutev; Natalia T. Kolkovska; Milena Dimova (Comput. Math. Appl., 2013)

Stability or instability of solitary waves to double dispersion equation with quadratic-cubic nonlinearity. - Natalia T. Kolkovska; Milena Dimova; Nikolai Kutev (Math. Comput. Simul., 2017)

Blow Up of Solutions to Wave Equations with Combined Logarithmic and Power-Type Nonlinearities. - Milena Dimova; Natalia T. Kolkovska; Nikolai Kutev (Axioms, 2024)