HENNING, MICHAEL A.; MOJDEH D.A.; SAYED SALEHI M.R. Neighborhood total domination and maximum degree in triangle-free graphs. Utilitas Mathematica , [S. l.], v. 107, 2018. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1317. Acesso em: 26 may. 2026.