LIU, MUHUO; LIU, BOLIAN. The nine smallest hyper-Wiener indices of trees and the eight smallest hyper-Wiener (wiener) indices of unicyclic graphs. Utilitas Mathematica , [S. l.], v. 95, 2014. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1004. Acesso em: 8 may. 2026.