共 37 条
[2]
Afonso A, 2010, WORKING PAPER SERIES, V1154
[5]
Aristovnik A., 2013, EC INFORM TECHNOLOGY, V3, P1
[7]
Aubyn M. S., 2009, ECON PAPERS, V390, DOI [10.2765/30348, DOI 10.2765/30348]