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Builder > 2022 > R.26, nr 10 > 29--31
Doctrina. Studia społeczno-polityczne > 2015 > 12 > 12 > 221-226
International Journal of Project Management > 2015 > 33 > 1 > 153-164
Procedia Economics and Finance > 2014 > 8 > Complete > 683-687
Studia theologica > 2011 > 13 > 1 > 99-120
International Journal of Project Management > 2010 > 28 > 4 > 405-412