1.
TrzcieliƄska-Polus A. The regional level of paradiplomacy (on the example of Opole Voivodeship). Bord. Reg. Stud. [Internet]. 2015 Dec. 10 [cited 2024 Dec. 27];3(2):117-33. Available from: https://czasopisma.uni.opole.pl/index.php/p/article/view/485