1.
Dinh NV. A modified asymptotic method for a Van-der-Pol oscillator with large cubic restoring nonlinearity. Vietnam J. Mech. [Internet]. 2004 Jun. 1 [cited 2024 Mar. 29];26(2):122-8. Available from: https://vjs.ac.vn/index.php/vjmech/article/view/5696