A GENERALIZATION OF REDFIELD’S MASTER THEOREM. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 95, p. 91–98, 2003. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/179. Acesso em: 11 jan. 2026.