DEEPALI JAIN. A Study on Efficient Comprehensive Package for Delhi Metro Commuters. European Economic Letters (EEL), [S. l.], v. 13, n. 3, p. 1394–1401, 2023. Disponível em: https://eelet.org.uk/index.php/journal/article/view/445. Acesso em: 11 sep. 2025.