VNUKOVICH, Y. ETHNIC IDENTIFICATION OF BELARUSIANS AND LITHUANIANS BASED ON THE "SPEECH SAMPLES" COLLECTED BY P.I. KÖPPEN IN 1827. Vestnik of Polotsk State University. Part A. Humanities, [S. l.], n. 3, p. 84-99, 2025. DOI: 10.52928/2070-1608-2025-75-3-84-99. Disponível em: https://journals.psu.by/humanities/article/view/8051. Acesso em: 13 nov. 2026.