“Two nontrivial homoclinic orbits for a class of nonperiodic  perturbed Hamiltonian systems”, NS, vol. 32, no. 4, pp. 1237–1248, Nov. 2025, Accessed: Feb. 03, 2026. [Online]. Available: https://nonlinearstudies.com/index.php/nonlinear/article/view/3899