Addendum to my paper "Some short historical notes on development of mathematical logic in Sofia’’. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 97, p. 145–145, 2005. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/153. Acesso em: 15 dec. 2025.