Lidar investigations of ozone in the upper troposphere – lower stratosphere: technique and results of measurementsOleg A. Romanovskii, Alexey A. Nevzorov, Alexey V. Nevzorov and Olga V. KharchenkoEPJ Web Conf., 176 (2018) 05054DOI: https://doi.org/10.1051/epjconf/201817605054