SHYMANSKA, Oksana. Natural experiments: finding answers to important questions (Nobel Prize 2021). Herald of Economics, [S. l.], n. 1, p. 157–170, 2022. DOI: 10.35774/visnyk2022.01.157. Disponível em: https://visnykj.wunu.edu.ua/index.php/htneu/article/view/1323.. Acesso em: 5 dec. 2025.