1. M. Bianchi, A. Cornaro, J. L. Palacios, A. Torriero, Bounding the sum of powers of normalized Laplacian eigenvalues of graph through majorization method, MATCH Commun. Math. Comput. Chem. 70 (2013) 707-716.
2. Ş. B. Bozkurt, D. Bozkurt, On the sum of powers of normalized Laplacian eigenvalues of graphs, MATCH Commun. Math. Comput. Chem. 68 (2012) 917-930.
3. Ş. B. Bozkurt Altındağ, Note on the sum of powers of normalized signless Laplacian eigenvalues of graphs, Math. Interdisc. Res. 4 (2) (2019) 171-182.
4. Ş. B. Bozkurt Altındağ, Sum of powers of normalized signless Laplacian eigenvalues and Randić (normalized) incidence energy of graphs, Bull. Inter. Math. Virtual Inst. 11 (1) (2021) 135-146.
5. Ş. B. Bozkurt, A. D. Gungor, I. Gutman, A. S. Cevik, Randić matrix and Randić energy, MATCH Commun. Math. Comput. Chem. 64 (2010), 239-250.