The Combined Effect of Ozone and Aerosols on Erythemal Irradiance in an Extremely Low Ozone Event during May 2020 - Ioannis-Panagiotis Raptis; Eleftheratos, Kostas; Kazadzis, Stelios; Kosmopoulos, Panagiotis; Kyriakoula Papachristopoulou; Solomos, Stavros (Atmosphere, 2021)