"The terrible trade-off: Why governments must choose between more violence or stronger gangs," Modern War Institute at West Point (with Chris Blattman and Ben Lessing). [Discussion Paper] (2022)
"Measuring organised crime: challenges and solutions for collecting data on armed illicit groups," SOC ACE Serious Organised Crime & Anti-Corruption, Briefing Note 3 (with Chris Blattman, Ben Lessing and Juan Pablo Mesa-Mejía). [Discussion Paper] (2022)
"The terrible trade off: how the hidden cost of organised crime harms cities, and what can be done about it," SOC ACE Serious Organised Crime & Anti-Corruption, Briefing Note 4 (with Chris Blattman and Ben Lessing). [Discussion Paper] (2022)
"Crime trajectories in times of COVID-19: The case of Colombia," IDB Technical Report, 2034 (with Nathalie Alvarado, Ervyn Norza, Santiago Pérez-Vincent and Martín Vanegas-Arias). [Discussion Paper | Outreach: Sin Miedos - IADB] (2020)
"Crime in the time of covid-19," Economic Development and Institutions Report, COVID-19 Essay Series (with Chris Blattman, David Cerero, Gustavo Duncan, Sebastian Hernandez, Ben Lessing, Juan Felipe Martinez, Juan Pablo Mesa-Mejía and Helena Montoya). [Discussion Paper] (2020)
"What works to prevent violence among youth? A white paper on youth violence, crime prevention and the Mexican context," USAID Report, AID-523- C-15-00002 (with Thomas Abt, Chris Blattman and Beatriz Magaloni). [Report, Spanish version, Policy brief] (2018)
"Sector Wide Impact Assessment on Human Rights: Mining Unseen," Institute for Human Rights and Business Report (with Luis Fernando De Angulo, Camila Miranda, Blanca Llorente, Natalia Torres, Alejandra Castillo, Margaret Wachenfeld, Andreé Viana and Viviana Arango). [Report] (2016)
How conflict and illicit economies undermine fiscal stability in Colombia, UNU-WIDER. (2024)
Investing in prison quality: A cost-effective way to reduce recidivism, VoxDev. (2023)
State-building on the margin: An urban experiment in Medellín, VoxDev (with Chris Blattman, Gustavo Duncan, and Ben Lessing). (2022)
La paz posible con el crimen organizado, El Espectador. (2022)
El terrible dilema para reducir la violencia organizada: El caso de Medellín, Nada es gratis. (2022)
La especialización y el aprendizaje criminal en las cárceles, Foco Económico. (2022)
Reflexiones sobre crimen y violencia, speech after receiving the Juan Luis Londoño Medal 2020. (2021)
Mejorar la calidad de vida de los presos: una inversión rentable, Razón Pública. (2020)
COVID-19 y crimen: Los grandes retos en la pandemia, Sin Miedos - Banco Interamericano de Desarrollo. (2020)
Gobierno criminal: ¿Qué es y cómo enfrentarlo?, Foco Económico. (2020)
Colombia necesita más que una reforma policial, La Silla Vacía (with Isabel Gutiérrez). (2020)
El COVID vuelve a abrir el debate sobre el salario mínimo, La Silla Vacía. (2020)
Presos colombianos: Hacinados y sin salud, Razón Pública. (2016)
De policía militarizada a policía comunitaria, Razón Pública (with Isabel Gutiérrez). (2016)
Cárceles en Colombia: Un sistema que colapsó, Razón Pública (with Isabel Gutiérrez). (2015)
Política de drogas en Colombia: Congestión y corrupción, otras caras del fracaso, Razón Pública (with Isabel Gutiérrez). (2015)
Fuly Kids Podcast, Episode 53
Stories of impact, From gangs to growth: Fighting for the future of Medellín's teens
The visible hand, Episode 38
Probable causation, Episode 61