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Procedia Economics and Finance > 2015 > 24 > Complete > 318-321
International Advances in Economic Research > 2011 > 17 > 1 > 28-44
Wiadomości Statystyczne. The Polish Statistician > 2011 > nr 7-8 > 99-115
2009 International Conference on Machine Learning and Cybernetics > 5 > 2608 - 2613
Ekonomický časopis (Journal of Economics) > 2006 > 54 > 4 > 368-385