In memory of Ihor Yukhnovskii, the founder and editor-in-chief of the journal ’’Condensed Matter Physics’’ (1925-2024). Condensed Matter Physics, Lviv, Ukraine, v. 27, n. 2, p. 20001, 2024. DOI: 10.5488/cmp.27.20001. Disponível em: https://cmpj2.icmp.lviv.ua/index.php/cmpj/article/view/46.. Acesso em: 6 jul. 2025.