Xie, P.-S.P.-S.XieShih, P.-J.P.-J.ShihPO-JEN SHIH2020-02-262020-02-262015https://scholars.lib.ntu.edu.tw/handle/123456789/464351A Unique Formulation of Piecewise Exact Method to Analyze a Nonlinear Spring System under Harmonic Excitationjournal article10.1017/jmech.2014.832-s2.0-84930743661https://www.scopus.com/inward/record.uri?eid=2-s2.0-84930743661&doi=10.1017%2fjmech.2014.83&partnerID=40&md5=009ca3ed7a9998930e46663f1af1b883