Yamgoue SB, Lekeufack OT, Kofane TC. Harmonic Balance for Non-Periodic Hyperbolic Solutions of Nonlinear Ordinary Differential Equations. MMA [Internet]. 2017Mar.18 [cited 2024Nov.10];22(2):140-56. Available from: https://jbem.vilniustech.lt/index.php/MMA/article/view/881