Hedrih(. K. (2008) “Energy interaction between linear and nonlinear oscillators (energy transfer through the subsystems in a hybrid system)”, Ukrains’kyi Matematychnyi Zhurnal, 60(6), pp. 796–814. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3197 (Accessed: 27July2024).