KUMAR, Saurabh; SINHA, Sanjeev. Willingness to Pay for Improvement in Service Quality of Intermediate Public Transport (IPT) Modes. Civil Engineering Journal, [S. l.], v. 7, n. 5, p. 866–879, 2021. DOI: 10.28991/cej-2021-03091696. Disponível em: https://www.civilejournal.org/index.php/cej/article/view/2717. Acesso em: 21 sep. 2025.