G Karopoulos, JL Hernandez-Ramos… - IEEE …, 2021 - ui.adsabs.harvard.edu
A Survey on Digital Certificates Approaches for the COVID-19 Pandemic - NASA/ADS Now on home page ads icon ads Enable full ADS view NASA/ADS A Survey on Digital Certificates …
G KAROPOULOS, JL HERNANDEZ-RAMOS… - researchgate.net
Digital COVID-19 certificates serve as reliable proof that an individual was vaccinated, tested negative, or healed from COVID-19, facilitating health, occupational, educational, and …
G KAROPOULOS, RJL HERNANDEZ, V KOULIARIDIS… - publications.jrc.ec.europa.eu
JRC Publications Repository An official website of the European UnionAn official EU website How do you know? All official European Union website addresses are in the europa.eu …
G KAROPOULOS, JL HERNANDEZ-RAMOS… - researchgate.net
Digital COVID-19 certificates serve as reliable proof that an individual was vaccinated, tested negative, or healed from COVID-19, facilitating health, occupational, educational, and …