MICHAEL KEEVAK2020-03-062020-03-062012https://scholars.lib.ntu.edu.tw/handle/123456789/471602other10.1353/ecy.2012.00202-s2.0-84862983278https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862983278&doi=10.1353%2fecy.2012.0020&partnerID=40&md5=709eaae78c3358e6483df6d25f218bdc