1. I. Gohberg, P. Lancaster and L. Rodman,Spectral analysis of matrix polynomials, I. Canonical forms and divisors, to appear in Linear Algebra and Appl.
2. I. Gohberg, P. Lancaster and L. Rodman,Spectral analysis of matrix polynomials, II. The resolvent form and spectral divisors, to appear in Linear Algebra and Appl.
3. I. Gohberg, P. Lancaster and L. Rodman,Representations and divisibility of operator polynomials, Dept. of Mathematics and Statistics, University of Calgary, preprint, 1977.
4. P. Lancaster,A fundamental theorem on lambda-matrices with applications, I. Ordinary differential equation with constant coefficients, to appear in Linear Algebra and Appl.
5. P. Lancaster,A fundamental theorem on lambda-matrices with applications, II. Finite difference equations, to appear in Linear Algebra and Appl.