Existence of three solutions to a $p(\cdot)$-biharmonic problem via a local mountain pass theorem Ghasem Afrouzi, John R. Graef, A. R. Jalali PDF file
Existence and asymptotic behavior of solutions for a class of Kirchhoff-type equations on the real half-line Ishak Kettaf, Sofiane Khoutir, Hicham Kasri PDF file
On the dynamic of discrete-time Rayleigh-Duffing oscillators Mehdi Fatehi Nia, Zehra Nurkanović, Najmeh Khajoei PDF file