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https://uk.wikipedia.org/wiki/%D0%9E%D0%BA%D0%BB%D0%B5%D0%BD%D0%B4%D1%81%D1%8C%D0%BA%D0%B8%D0%B9_%D1%83%D0%BD%D1%96%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%82%D0%B5%D1%82#cite_note-[https://web.archive.org/web/20221215225406/https://www.heliosopen.org/members_https://web.archive.org/web/20221215225406/https://www.heliosopen.org/members]%3Cspan_class=%22wef_low_priority_links%22%3E%3C/span%3E%3Cdiv_style=%22display:none%22%3E%3C/div%3E-12