JANG, SLSLJANGNORSWORTHY, JRJRNORSWORTHY2018-09-102018-09-101990http://www.scopus.com/inward/record.url?eid=2-s2.0-38249021080&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/288847Measurement methods for technological change embodied in inputsjournal article10.1016/0165-1765(90)90023-T