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задача трёх тел . Matemaatika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://127.0.0.1:5577/search/unif//mat/%D0%B7%D0%B0%D0%B4%D0%B0%D1%87%D0%B0%20%D1%82%D1%80%D1%91%D1%85%20%D1%82%D0%B5%D0%BB/1/rus (08.10.2026)