Nonnegative Matrices That Are Similar to Positive Matrices. - Thomas J. Laffey; Raphael Loewy; Helena Smigoc (SIAM J. Matrix Anal. Appl., 2009)

Sufficient Conditions on Commutators for a Pair of Stable Matrices to Have a Common Solution to the Lyapunov Equation. - Thomas J. Laffey; Helena Smigoc (SIAM J. Matrix Anal. Appl., 2010)

Spectral arbitrariness for trees fails spectacularly. - Shaun M. Fallat; H. Tracy Hall; Rupert H. Levene; Seth A. Meyer; Shahla Nasserasr; Polona Oblak; Helena Smigoc (J. Comb. Theory B, 2024)