Seventeen-year systematic measurements of dust aerosol optical properties using the eole ntua lidar system (2000-2016)Ourania Soupiona, Maria Mylonaki, Alexandros Papayannis, Athina Argyrouli, Panayotis Kokkalis and Georgios TsaknakisEPJ Web Conf., 176 (2018) 05029DOI: https://doi.org/10.1051/epjconf/201817605029