Legal basis for the participation of an expert in the proceedings of the Russian Federation and the United States of AmericaElena Anatolievna Logvinets, Natalia Рetrovna Katorgina, Natalia Yurievna Sudnikova, Sergey Nikolaevich Mamin and Irina Nikolaevna KislitsinaSHS Web Conf., 118 (2021) 03012DOI: https://doi.org/10.1051/shsconf/202111803012