Parfinenko, Anatoliy, Olena Yevtushenko, Iryna Panova, Polina Podlepina, and Maksym Onatskyi. 2022. “International Tourism As a Tool of European Integration Within Eastern European Countries”. Problemy Ekorozwoju 17 (2):186-96. https://doi.org/10.35784/pe.2022.2.20.