Lin, T.-C.T.-C.LinTAI-CHIA LIN2018-09-102018-09-101999http://www.scopus.com/inward/record.url?eid=2-s2.0-0033475903&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/347034Vortices for the nonlinear wave equationjournal article10.3934/dcds.1999.5.3912-s2.0-0033475903WOS:000079353400010