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Economics and Environment > 2023 > No. 4 > 1--29
Polish Journal of Management Studies > 2021 > Vol. 24, No. 1 > 354--372
Marketing i Rynek > 2020 > 2 > 3-13
Kwartalnik Naukowy Uczelni Vistula > 2017 > 1(51) > 265-278
Ekonomia i Zarządzanie > 2016 > Vol. 8, no. 3 > 35--42