1.
Cerda P, Faria LF, Toon E, Ubilla P. Two homoclinic orbits for some second-order Hamiltonian systems. TMNA [Internet]. 2019 Sep. 25 [cited 2024 Apr. 19];54(2):427-44. Available from: https://apcz.umk.pl/TMNA/article/view/TMNA.2019.036