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Problemy Zarządzania > 2017 > 1/2017 (65), t.1 > 129 – 150
Polish Journal of Management Studies > 2016 > Vol. 13, No. 1 > 40--49
Studia Regionalne i Lokalne > 2011 > 1(43) > 81-96
Folia Oeconomica Cracoviensia > 2010 > 51 > 5-25