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Copyright (c) 2017 Svetlana Liubarets, Irina Iliyenko, Tetiana Liubarets, Olena Lyaskivska, Nataliia Bidenko, Oleksandr Savychuk, Dymytriy Bazyka

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

ISSN 2504-5679 (Online), ISSN 2504-5660 (Print)