Tsai M.S.Wang K.W.2019-07-042019-07-0419969641726https://www.scopus.com/inward/record.uri?eid=2-s2.0-0030260910&doi=10.1088%2f0964-1726%2f5%2f5%2f017&partnerID=40&md5=32a462ec1b3bf1a5d5e10f163e095010https://scholars.lib.ntu.edu.tw/handle/123456789/412731Control of a ring structure with multiple active - Passive hybrid piezoelectrical networksjournal article10.1088/0964-1726/5/5/0172-s2.0-0030260910