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Economic and Environmental Studies > 2018 > 18 > 1 > 387-409
Ekonomia. Wrocław Economic Review > 2017 > 23 > 4 > 29 - 47
Studia Ecologiae et Bioethicae > 2016 > 14 > 3 > 193-219
Wiadomości Statystyczne. The Polish Statistician > 2016 > 9 > 55-68
Czech Journal of Social Sciences, Business and Economics > 2014 > 3 > 3 > 25-32