1. Li–He's modified homotopy perturbation method coupled with the energy method for the dropping shock response of a tangent nonlinear packaging system. Issue 2 (June 2021) Authors: Ji, Qiu-Ping; Wang, Jun; Lu, Li-Xin; Ge, Chang-Feng Journal: Journal of low frequency noise, vibration, and active control Issue: Volume 40:Issue 2(2021) Page Start: 675 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗