1. M. Andjelić, S.K. Simić, Some notes on the threshold graphs, in press.
2. K. Balińska, D. Cvetković, Z. Radosavljević, S. Simić, D. Stevanović, A survey on integral graphs, Univ. Beograd, Publ. Elektrotehn. Fak. Ser. Mat. 13 (2002) 42–65 (Errata, These Publications 15 (2004) 112).
3. F. Belardo, E.M. Li Marzi, S.K. Simić, J. Wang, On the index of necklaces, in press.
4. A sharp lower bound for the least eigenvalue of the signless Laplacian of a non-bipartite graph;Cardoso;Linear Algebra Appl.,2008
5. Signless Laplacians and line graphs;Cvetković;Bull. Acad. Serbe Sci. Arts, Cl. Sci. Math. Natur., Sci. Math.,2005