Optimization of the technology of clonal micro-propagation of cherry varieties and clonal rootstocks at the initial stages of in vitro cultivationO.V. Ostrikova, I.E. Fedotova, E.L. Kharkhardina and V.V. ShakhovE3S Web Conf., 254 (2021) 04003DOI: https://doi.org/10.1051/e3sconf/202125404003