LINDNER C.C.; PENFOLD STREET, ANNE. Multiple minimum coverings of Kn with copies of K4 - e. Utilitas Mathematica , [S. l.], v. 52, 1997. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/37. Acesso em: 8 may. 2026.