Publikacja dostępna w wersji elektronicznej na licencji: Creative Commons Attribution 4.0 International (CC BY 4.0). Received: 31 October 2019, revised: 18 December 2019, accepted: 18 December 2019, published: 24 December 2019. Publikacja wydana w: Special Issue "Innovation and the Development of Enterprises" / ed. Katarzyna Szopik-Depczyńska. Ta publikacja należy do sekcji: "Economic and Business Aspects of Sustainability". This research was funded by the project within the framework of the program of the Minister of Scienceand Higher Education under the name “Regional Excellence Initiative” in the years 2019–2022. |
