Short proofs of theorems of Mirsky and Horn on diagonals and eigenvalues of matrices. Carlen, Eric A., Lieb, Elliott H. (2009) ELA. The Electronic Journal of Linear Algebra [electronic only]
Similarities of discrete and continuous Sturm-Liouville problems. Ghanbari, Kazem (2007) Electronic Journal of Differential Equations (EJDE) [electronic only]
Spectral properties of sign symmetric matrices. Hershkowitz, Daniel, Keller, Nathan (2005) 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]