PUBLISHED PAPERS

Gómez, S.,  Guzman, L. A., & Rincón, J. L. O. (2026). Public transport vouchers to enhance ridership: Mental accounting bias in frequent public transport users. Journal of Behavioral and Experimental Economics, 102595. Here

Guzman, L. A., Ochoa, J. L., Gómez, S., & Sarmiento-Barbieri, I. (2025). Pro-poor transport subsidies: More user welfare and faster travel. Transportation Research Part A: Policy and Practice, 195, 104454. Here

Guzman, L. A., Sanchez, J. E., Cantillo-Garcia, V. A., Gómez, S., & Sarmiento, O. L. (2025). A lifeline for the disconnected: a longitudinal study of a cable car’s impact on accessibility, satisfaction, and leisure activities. Transport Policy. 165, 85-96 Here 

Guzman, L. A., Gómez, S., & Ochoa, J. L. (2024). Increased ridership and improved affordability: Transforming public transport subsidies in developing contexts. Research in Transportation Economics, 108, 101492.  Here

Gómez, S., Mejía, D., & Tobón, S. (2021). The deterrent effect of surveillance cameras on crime. Journal of policy analysis and management, 40(2), 553-571. . Here. 

Guzman, L.A., Beltran, C, Bonilla, J, Gómez, S. (2021) BRT fare elasticities for from smartcard data: spatial and time-of-the-day differences. Transportation Research Part A: Policy and Practice 150, 335-348. Here.

Guzman, L. A., & Gómez, S. (2021). Density-oriented public transport corridors: Decoding their influence on BRT ridership at station-level and time-slot in Bogotá. Cities, 110, 103071. Here. 

Guzmán, L.A., S. Gómez, CA Moncada (2019). Short run fare elasticities for Bogota's BRT systems: ridership responses to fare increases. Transportation. 1-19 . Here

Cárdenas, J.C., C. Mantilla y S. Gomez. (2019). Between-group competition enhances cooperation in public goods appropriation games.  Ecological Economics. 157: 17 - 26. Here

Guzman, L. A., Moncada, C. A., & Gómez, S. (2018). Fare discrimination and daily demand distribution in the BRT system in Bogotá. Public Transport, 10(2): 191-216. Here. 

Gómez, S. (2017). La adopción de la caficultura orgánica por comunidades locales. Reflexiones a partir de un caso en el suroccidente de Colombia (1990-2000). Revista Ciencias y Humanidades, 5(5), 49-74. Here

Gómez, S. (2012). Tensions of Organic Markets for Colombian Coffee Growers: The Case of Valle del Cauca / Las tensiones de los mercados orgánicos para los caficultores colombianos. El caso del Valle del Cauca.''. Cuadernos De Desarrollo Rural. Pontificia Universidad Javeriana (Bogotá, Colombia). Enero-junio, 9(68):65--85. Here.