A nontrivial upper bound on the largest Laplacian eigenvalue of weighted graphsROJO, Oscar.Linear algebra and its applications. 2007, Vol 420, Num 2-3, pp 625-633, issn 0024-3795, 9 p.Article

The spectra of a graph obtained from copies of a generalized Bethe treeROJO, Oscar.Linear algebra and its applications. 2007, Vol 420, Num 2-3, pp 490-507, issn 0024-3795, 18 p.Article

The spectra of some trees and bounds for the largest eigenvalue of any treeROJO, Oscar.Linear algebra and its applications. 2006, Vol 414, pp 199-217, issn 0024-3795, 19 p.Article

Improved bounds for the largest eigenvalue of treesROJO, Oscar.Linear algebra and its applications. 2005, Vol 404, pp 297-304, issn 0024-3795, 8 p.Article

On the spectra of certain rooted treesROJO, Oscar.Linear algebra and its applications. 2006, Vol 414, pp 218-243, issn 0024-3795, 26 p.Article

Spectra of copies of a generalized Bethe tree attached to any graphROJO, Oscar.Linear algebra and its applications. 2009, Vol 431, Num 5-7, pp 863-882, issn 0024-3795, 20 p.Article

Spectra of weighted generalized Bethe trees joined at the rootROJO, Oscar.Linear algebra and its applications. 2008, Vol 428, Num 11-12, pp 2961-2979, issn 0024-3795, 19 p.Article

Line graph of combinations of generalized Bethe trees: Eigenvalues and energyROJO, Oscar; JIMENEZ, Raúl D.Linear algebra and its applications. 2011, Vol 435, Num 10, pp 2402-2419, issn 0024-3795, 18 p.Article

A decreasing sequence of upper bounds on the largest Laplacian eigenvalue of a graphROJO, Oscar; ROJO, Héctor.Linear algebra and its applications. 2004, Vol 381, pp 97-116, issn 0024-3795, 20 p.Article

Eigenvalues of certain weighted graphs joined at their roots having cliques at some levelsMEDINA, Luis; ROJO, Oscar.Linear algebra and its applications. 2012, Vol 437, Num 3, pp 878-898, issn 0024-3795, 21 p.Article

The spectra of the adjacency matrix and Laplacian matrix for some balanced treesROJO, Oscar; SOTO, Ricardo.Linear algebra and its applications. 2005, Vol 403, pp 97-117, issn 0024-3795, 21 p.Article

Existence and construction of nonnegative matrices with complex spectrumROJO, Oscar; SOTO, Ricardo L.Linear algebra and its applications. 2003, Vol 368, pp 53-69, issn 0024-3795, 17 p.Article

Spectral characterization of some weighted rooted graphs with cliquesROJO, Oscar; MEDINA, Luis.Linear algebra and its applications. 2010, Vol 433, Num 7, pp 1388-1409, issn 0024-3795, 22 p.Article

Guo perturbation for symmetric nonnegative circulant matricesROJO, Oscar; SOTO, Ricardo L.Linear algebra and its applications. 2009, Vol 431, Num 5-7, pp 594-607, issn 0024-3795, 14 p.Article

A note on the integer eigenvalues of the Laplacian matrix of a balanced binary treeROJO, Oscar; PENA, Matilde.Linear algebra and its applications. 2003, Vol 362, pp 293-300, issn 0024-3795, 8 p.Article

Isospectral flows preserving some centrosymmetric structuresGLADWELL, G. M. L; ROJO, Oscar.Linear algebra and its applications. 2007, Vol 422, Num 2-3, pp 839-853, issn 0024-3795, 15 p.Article

Isospectral flows that preserve matrix structureGLADWELL, G. M. L; ROJO, Oscar.Linear algebra and its applications. 2007, Vol 421, Num 1, pp 85-96, issn 0024-3795, 12 p.Conference Paper