Monitoring Ice Crystals Clouds: Investigation of the Lidar Depolarization RatiosKalliopi – Artemis Voudouri, Elina Giannakaki, Mika Komppula, Anna Gialitaki, Athanasios Natsis and Dimitris BalisEPJ Web Conf., 237 (2020) 08013DOI: https://doi.org/10.1051/epjconf/202023708013