WANG, JianFeng, HUANG, Qiongxiang, BELARDO, Francesco in LI MARZI, Enzo M., 2009, On graphs whose signless Laplacian index does not exceed 4.5. [na spletu]. 2009. Vol. 431, no. 1/2, p. 162–178. [Dostopano 25 april 2025]. DOI 10.1016/j.laa.2009.02.017. Pridobljeno s: http://ac.els-cdn.com/S0024379509000962/1-s2.0-S0024379509000962-main.pdf?_tid=f9bf69da-a6d4-11e4-9324-00000aab0f6b&acdnat=1422439618_88da911108688d0e20a483dfe60dd084
