Yudin Д. Unpublished Materials and Research of Academician M. N. Speransky, Dedicated to the Yaroslavl Horologion (XIII century). Word and Image: Questions of Slavonic and Russian Philology and Literature, [S. l.], n. 1 (2), p. 57–76, 2020. DOI: 10.31802/WI.2020.2.1.003. Disponível em: https://publishing.mpda.ru/index.php/word-and-image/article/view/177. Acesso em: 10 nov. 2026.