Dimitriou K., Bougiatioti A., Ramonet M., Pierros F., Michalopoulos P., Liakakou E., Solomos S., Quehe P.-Y., Delmotte M., Gerasopoulos E., Kanakidou M., Mihalopoulos N., Greenhouse gases (CO2 and CH4) at an urban background site in Athens, Greece: Levels, sources and impact of atmospheric circulation, Atmospheric Environment, 253, 118372, 2021. DOI: 10.1016/j.atmosenv.2021.118372