Fennell 2022, But the most vivid proof of the assimilation of the thrones of Vladimir and Moscow is to be found in Dmitry Donskoy's will of 1389 in which he bequeaths Vladimir to his eldest son. Fennell, John (23 September 2022). The Emergence of Moscow, 1304-1359. Univ of California Press. ISBN978-0-520-34758-8.