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Copyright (c) 2017 Nataliia Тsuhanovska, Nataliy Veretelnikova, Vyacheslav Romanenko, Dmytro Batulin, Alla Arkhypova, Viacheslav Honchar

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.