Fan, Dandan, Mu, Shanzhi, Chen, Hua, and Wang, Guoping. “On the Maximum (signless) Laplacian Spectral Radius of the Cacti”. Utilitas Mathematica 109 (November 9, 2018). Accessed May 7, 2026. https://utilitasmathematica.com/index.php/Index/article/view/1261.