FLAK, O.; GŁÓD, G. Features of Polish companies. Results of the company competitiveness barometer 2014. Oeconomia Copernicana, [S. l.], v. 6, n. 3, p. 117–135, 2015. DOI: 10.12775/OeC.2015.024. Disponível em: http://economic-research.pl/Journals/index.php/oc/article/view/168. Acesso em: 27 jan. 2022.