1.
Kalbarczyk M, Mackiewicz-Łyziak J. Ageing population, physical activity, and long-term fiscal sustainability: evidence from Poland . SD [Internet]. 2020 Dec. 30 [cited 2024 Apr. 26];(1(177):107-22. Available from: https://econjournals.sgh.waw.pl/SD/article/view/2522