Niebylski M. Involvement of stakeholders in the implementation of regional operational programs in Poland in terms of the application of the horizontal partnership rule in the 2014-2020 financial perspective. Stud. Polit. Publ. [Internet]. 2024 Jul. 23 [cited 2024 Oct. 25];10(4(40):63-87. Available from: https://econjournals.sgh.waw.pl/KSzPP/article/view/3034