NEGACZ, K., and A. PARA. “The Ecomuseum As a Sustainable Product and an Accelerator of Regional Development. The Case of the Subcarpathian Province”. Economic and Environmental Studies, vol. 14, no. 1 (29), Nov. 2020, pp. 51-73, https://czasopisma.uni.opole.pl/index.php/ees/article/view/2840.