PrykarpatskyA. K., SamoilenkoA. M. and SamoilenkoV. G. (2003) “Lyapunov–Schmidt Approach to Studying Homoclinic Splitting in Weakly Perturbed Lagrangian and Hamiltonian Systems”, Ukrains’kyi Matematychnyi Zhurnal, 55(1), pp. 66-74. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3888 (Accessed: 22November2024).