Dong TKP, Nguyen VM. The effects of circle-method in finding solutions for mechanical oscillation and wave problems. Tạp chí Khoa học Đại học Đồng Tháp [Internet]. 2023 Jun. 25 [cited 2025 Dec. 5];(34):115-20. Available from: https://dthujs.vn/index.php/dthujs/article/view/608