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The best writing on mathematics. 2020 / / Mircea Pitici, editor. — 1 online resource. — (The best writing in mathematics). — Доступ по паролю из сети Интернет (чтение, печать, копирование). — <URL:https://elib.spbstu.ru/ebsco/pdf/2488569.pdf>. — Текст: электронный
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