The Numerical Range of Self-Adjoint Quadratic Matrix Polynomials. - Peter Lancaster; Panayiotis J. Psarrakos (SIAM J. Matrix Anal. Appl., 2002)

A note on the controllability of higher-order linear systems. - Grigoris I. Kalogeropoulos; Panayiotis J. Psarrakos (Appl. Math. Lett., 2004)

On the Pseudospectra of Matrix Polynomials. - Peter Lancaster; Panayiotis J. Psarrakos (SIAM J. Matrix Anal. Appl., 2005)

A distance bound for pseudospectra of matrix polynomials. - Panayiotis J. Psarrakos (Appl. Math. Lett., 2007)

On pseudospectra of matrix polynomials and their boundaries. - Lyonell Boulton; Peter Lancaster; Panayiotis J. Psarrakos (Math. Comput., 2008)

An improved grid method for the computation of the pseudospectra of matrix polynomials. - Stavros Fatouros; Panayiotis J. Psarrakos (Math. Comput. Model., 2009)

On condition numbers of polynomial eigenvalue problems. - Nikolaos Papathanasiou; Panayiotis J. Psarrakos (Appl. Math. Comput., 2010)

Advances in Matrices, Finite and Infinite, with Applications. - P. N. Shivakumar; Panayiotis J. Psarrakos; K. C. Sivakumar; Yang Zhang (J. Appl. Math., 2013)

On the geometry of the envelope of a matrix. - Panayiotis J. Psarrakos; Michael J. Tsatsomeros (Appl. Math. Comput., 2014)

Advances in Matrices, Finite and Infinite, with Applications 2014. - P. N. Shivakumar; Panayiotis J. Psarrakos; K. C. Sivakumar; Yang Zhang; Carlos M. da Fonseca (J. Appl. Math., 2014)