VIETZE, Christoph. Social Tariff Concessions and the Price Elasticity of Demand of Local Public Transport System in a Medium Sized Urban Area. Raumforschung und Raumordnung | Spatial Research and Planning, DE, v. 69, n. 5, p. 319–331, 2011. DOI: 10.1007/s13147-011-0116-0. Disponível em: https://rur.oekom.de/index.php/rur/article/view/814.. Acesso em: 6 may. 2024.