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Journal of Entrepreneurship, Management and Innovation > 2018 > 14 > 1 > 109-122
Horyzonty Wychowania > 2018 > 17 > 43 > 231-240
Studia i Materiały > 2017 > 1/2017(23) > 94-102
Ekonomický časopis (Journal of Economics) > 2013 > 61 > 9 > 934 – 950