Inequalities involving the mean and the standard deviation of nonnegative real numbers. Rojo, Oscar — 2006 Journal of Inequalities and Applications [electronic only]
Spectra of weighted compound graphs of generalized Bethe trees. Rojo, Oscar; Medina, Luis — 2009 ELA. The Electronic Journal of Linear Algebra [electronic only]
Extremal algebraic connectivities of certain caterpillar classes and symmetric caterpillars. Rojo, Oscar; Medina, Luis; De Abreu, Nair M.M.; Justel, Claudia — 2010 ELA. The Electronic Journal of Linear Algebra [electronic only]
Symmetric nonnegative realization of spectra. Soto, Ricardo L.; Rojo, Oscar; Moro, Julio; Borobia, Alberto — 2007 ELA. The Electronic Journal of Linear Algebra [electronic only]
Spectra of weighted rooted graphs having prescribed subgraphs at some levels. Rojo, Oscar; Robbiano, Maria; Cardoso, Domingos M.; Martins, Enide A. — 2011 ELA. The Electronic Journal of Linear Algebra [electronic only]
On nonnegative realization of partitioned spectra. Soto, Ricardo L.; Rojo, Oscar; Manzaneda, Cristina B. — 2011 ELA. The Electronic Journal of Linear Algebra [electronic only]