Article

Mongan, Deirdre ORCID: https://orcid.org/0000-0003-3616-4253, Killeen, Nicki ORCID: https://orcid.org/0000-0001-6220-1586, Millar, Seán R ORCID: https://orcid.org/0000-0003-4453-8446, Matias, Joao, Keenan, Eamon ORCID: https://orcid.org/0000-0002-3395-3831 and Galvin, Brian ORCID: https://orcid.org/0000-0002-5639-1819 (2025) Hexahydrocannabinol (HHC) use and harms in Ireland: new findings from the 2024 European Web Survey on Drugs. International Journal of Drug Policy, Early online, https://doi.org/10.1016/j.drugpo.2025.105011.

Hughes, Brendan and Matias, Joao and Griffiths, Paul (2018) Inconsistencies in the assumptions linking punitive sanctions and use of cannabis and new psychoactive substances in Europe. Addiction, 113, (12),

López-Pelayo, Hugo and Madero, Santiago and Gremeaux, Lies and Ronka, Sanna and Matias, Joao (2024) Synthetic cannabinoids and cannabis: how the patterns of use differ: results from the European web survey on drugs. International Journal of Mental Health and Addiction, 22, pp. 1128-1144. https://doi.org/10.1007/s11469-022-00919-6.

Salgueiro-Gonzalez, Noelia and Béen, Frederic and Bijlsma, Lubertus and Boogaerts, Tim and Covaci, Adrian and Baz-Lomba, Jose Antonio and Kasprzyk-Hordern, Barbara and Matias, João and Ort, Christoph and Bodík, Igor and Heath, Ester and Styszko, Katarzyna and Emke, Erik and Hernández, Félix and van Nuijs, Alexander L N and Castiglioni, Sara (2024) Influent wastewater analysis to investigate emerging trends of new psychoactive substances use in Europe. Water Research, 254, 121390. https://doi.org/10.1016/j.watres.2024.121390.

Steenbeek, Ruud and Emke, Erik and Vughs, Dennis and Matias, João and Boogaerts, Tim and Castiglioni, Sara and Campos-Mañas, Marina and Covaci, Adrian and de Voogt, Pim and Ter Laak, Thomas and Hernández, Félix and Salgueiro-González, Noelia and Meijer, Wim G and Dias, Mario J and Simões, Susana and van Nuijs, Alexander L N and Bijlsma, Lubertus and Béen, Frederic (2022) Spatial and temporal assessment of crack cocaine use in 13 European cities through wastewater-based epidemiology. The Science of the Total Environment, 847, 157222. doi: 10.1016/j.scitotenv.2022.157222.

Report

European Monitoring Centre for Drugs and Drug Addiction. Buster, Marcel and Giraudon, Isabelle and Matias, Joao and Vicente, Julian (2012) Mortality among drug users: guidelines for carrying out, analysing and reporting key figures 2011–12. Lisbon: European Monitoring Centre for Drugs and Drug Addiction. EMCDDA project CT.10:EPI.003.

European Monitoring Centre for Drugs and Drug Addiction. Giraudon, Isabelle and Mena, Guillermo and Matias, Joao and Vicente, Julian (2014) Emergency health consequences of cocaine use in Europe. A review of the monitoring of drug-related acute emergencies in 30 European countries. Lisbon: European Monitoring Centre for Drugs and Drug Addiction.

European Monitoring Centre for Drugs and Drug Addiction. Matias, Joao (2022) Monitoring drug use in the digital age: studies in web surveys. European web survey on drugs: an overview of the project. Luxembourg: Publications Office of the European Union.

Vuolo, Mike and Matias, Joao (2022) Monitoring drug use in the digital age: studies in web surveys. Sources of cannabis acquisition by country and frequency of use in the European web survey on drugs. Lisbon: European Monitoring Centre for Drugs and Drug Addiction.