TIAN, Jingkun. Analysis of Influencing Factors of Residents’ Happiness in Smart Cities based on Principal Component Analysis. Journal of Education and Educational Research, [S. l.], v. 8, n. 3, p. 61–69, 2024. DOI: 10.54097/nh5jes24. Disponível em: https://drpress.org/ojs/index.php/jeer/article/view/21179. Acesso em: 10 oct. 2024.