- E.N. Antoniou; S. Vologiannidis
*A new family of companion forms of polynomial matrices,*

Electron. J. Linear Algebra 11 (2004), 78-87. - D. Steven Mackey; Niloufer Mackey; Daniel M. Dunlavy
*Structure preserving algorithms for perplectic eigenproblems,*

Electron. J. Linear Algebra 13 (2005), 10-39. - Christian Mehl
*On classification of normal matrices in indefinite inner product spaces,*

Electron. J. Linear Algebra 15 (2006), 50-83. - Efstathios N. Antoniou; Stavros Vologiannidis
*Linearizations of polynomial matrices with symmetries and their applications,*

Electron. J. Linear Algebra 15 (2006), 107-114.