Route to extreme events in a parametrically driven position-dependent nonlinear oscillator B. Kaviya, R. Gopal, R. Suresh and V. K. Chandrasekar Eur. Phys. J. Plus, 138 1 (2023) 36 Published online: 17 January 2023 DOI: 10.1140/epjp/s13360-022-03625-3