Wielki J, Sytnik I, Sytnik B. Doing Business Online as the Key Factor of Regional Entrepreneurship Development — Modern Business Models and Development Trends. br [Internet]. 2018 Feb. 16 [cited 2025 Dec. 5];15(4):31-7. Available from: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/400