Search results
Journal of Productivity Analysis > 2014 > 41 > 2 > 227-246
Journal of The Japanese and International Economies > 2012 > 26 > 1 > 110-128
2009 International Conference on Machine Learning and Cybernetics > 5 > 2608 - 2613
Review of World Economics > 2009 > 145 > 3 > 431-445