CHERVENOV, N.; GEORGIEV, V.; VASSILEV, A. In Memoriam Iordan Iordanov (1948-2021). Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 111, p. 5–24, 2024. DOI: 10.60063/gsu.fmi.111.5-24. Disponível em: https://ftl5.uni-sofia.bg/index.php/fmi/article/view/995. Acesso em: 22 dec. 2024.