Diz-Pita, Érika, Jaume Jaume Llibre, and M. Victoria Otero-Espinar. “On the Dynamics of the Autonomous Duffing–Holmes Oscillator”. Nonlinear Analysis: Modelling and Control 31, no. 3 (May 1, 2026): 699–721. Accessed August 10, 2026. https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/46613.