WANG, HONGYU; LI, ZEPENG; XU, JIN. The cryptography models designed by double odd labelling of trees. Utilitas Mathematica , [S. l.], v. 106, 2018. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1352. Acesso em: 26 may. 2026.