Wu, Yuhu, and Xiaoping Xue. “Asymptotics for a Dissipative Dynamical System With Linear and Gradient-Driven Damping”. Mathematical Modelling and Analysis 18, no. 5 (December 1, 2013): 654-674. Accessed November 22, 2024. https://jest.vgtu.lt/index.php/MMA/article/view/4144.