Hsueh, W.J.W.J.HsuehWEN-JENG HSUEH2020-01-172020-01-172004https://scholars.lib.ntu.edu.tw/handle/123456789/451931Closed solutions of wave propagation in finite-periodic stringsjournal article10.1098/rspa.2003.11702-s2.0-1542512474https://www.scopus.com/inward/record.uri?eid=2-s2.0-1542512474&doi=10.1098%2frspa.2003.1170&partnerID=40&md5=37b47fb8174046c1eced0ad70eda1c64