, E. Reminiscences of prof. Dolaptchiev. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 88, p. 51–72, 1996. Disponível em: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/378. Acesso em: 24 nov. 2024.