XIN, Xin; LI, Menggang. Correlation Analysis of China’s Urban Rail Transit Industry. Periodica Polytechnica Transportation Engineering, [S. l.], v. 45, n. 3, p. 148–156, 2017. 10.3311/PPtr.10380. Disponível em: https://pp.bme.hu/tr/article/view/10380. Acesso em: 26 dec. 2024.