Erkut, Burak. “Entrepreneurship and Economic Freedom: Do Objective and Subjective Data Reflect the Same Tendencies?”. Entrepreneurial Business and Economics Review 4, no. 3 (September 18, 2016): 11–26. Accessed August 2, 2025. https://eber.uek.krakow.pl/index.php/eber/article/view/129.