HOROZOV, E. 70th anniversary of Todor Genchev (1932-1998). Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 95, p. 7–9, 2003. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/172. Acesso em: 24 nov. 2024.