Bracci, A., Nadini, M., Aliapoulios, M., McCoy, D., Gray, I., Teytelboym, A., Gallo, A. ORCID: 0000-0002-8355-1689 and Baronchelli, A. ORCID: 0000-0002-0255-0829 (2021). Dark Web Marketplaces and COVID-19: before the vaccine. EPJ Data Science, 10(1), 6.. doi: 10.1140/epjds/s13688-021-00259-w