CAO, HAITAO; DU, BEILIANG. Critical sets in direct product C3 × Cn of back circulant latin squares. Utilitas Mathematica , [S. l.], v. 62, 2002. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/238. Acesso em: 8 may. 2026.