CHANG, Huajing; WANG, Shuaidi; WANG, Yijun. Correlation and Its Changing Characteristics in the Main Belt and Road Countries of Life Expectancy and GDP Per Capita from 1990 to 2020. Highlights in Science, Engineering and Technology, [S. l.], v. 54, p. 328–334, 2023. DOI: 10.54097/hset.v54i.9788. Disponível em: https://drpress.org/ojs/index.php/HSET/article/view/9788. Acesso em: 28 apr. 2026.