Strategies for distance support of advanced professional training for teachers of Russian as the second languageAlina Aleksandrovna Pozdnyakova, Galina Vasilievna Kuznetsova, Tatiana Evgenievna Kolyadina, Daria Aleksandrovna Dmitrieva and Larisa Yurievna MorozovaSHS Web Conf., 121 (2021) 02008DOI: https://doi.org/10.1051/shsconf/202112102008