Enlace original:
https://openknowledge.worldbank.org/handle/10986/7562
Estupiñán, Nicolás
,
Gómez-Lobo, Andrés
,
Muñoz-Raskin, Ramón
,
Serebrisky, Tomás
,
[ Affordability and Subsidies in Public Urban Transport : What Do We Mean, What Can Be Done? ]