WANG, HAICHAO; KIM, HYE KYUNG; DENG, YUNPING. On signed domination number of Cartesian product of directed paths. Utilitas Mathematica , [S. l.], v. 109, 2022. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1282. Acesso em: 7 may. 2026.