2008年10月
IZA DP No. 3809: Downloading Wisdom from Online Crowds
revised version published as 'Proxying for Unobservable Variables with Internet Document-Frequency' in: Journal of the European Economic Association, 2013, 11 (1), 137–165
2008年10月
revised version published as 'Proxying for Unobservable Variables with Internet Document-Frequency' in: Journal of the European Economic Association, 2013, 11 (1), 137–165