Andrzej Skibiński. “Business Demography As A Source Of Information About The Level And Dynamics Of Entrepreneurship Development - Example Of Selected Eu Countries”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 7 (April 16, 2021): 2952–2958. Accessed October 8, 2025. https://www.turcomat.org/index.php/turkbilmat/article/view/3912.