BRYANT, DARRYN; GRANNELL, MIKE; GRIGGS, TERRY. Large sets of large sets of Steiner triple systems of order 9. Utilitas Mathematica , [S. l.], v. 64, 2003. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/285. Acesso em: 9 jul. 2026.