ABDOLLAHI A.; MAIMANI H.R.; TORABI R. On the automorphism group of a possible symmetric (81,16,3) design. Utilitas Mathematica , [S. l.], v. 78, 2009. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/654. Acesso em: 8 may. 2026.