共 54 条
[2]
[Anonymous], 2015, US PATENT STAT REPOR
[3]
[Anonymous], 2019, Activities of U.S. Multinational Enterprises (MNEs)
[7]
Behar A, 2011, HANDBOOK OF TRANSPORT ECONOMICS, P97
[8]
Bernard AB, 1996, AM ECON REV, V86, P1216
[10]
Bilir L. K., 2016, W22160 NAT BUR EC RE