F. Schagen

Introduction to mathematical systems theory

Christiaan Heij, Freek van Schagen, Andrae Ran, 1997 .

On the local theory of regular analytic matrix functions

Israel Gohberg, Marinus A. Kaashoek, M. A. Kaashoek, 1993 .

Partially Specified Matrices and Operators: Classification, Completion, Applications

M. A. Kaashoek, I. Gohberg, F. V. Schagen, 1995 .

Rational matrix and operator functions with prescribed singularities

M. A. Kaashoek, I. Gohberg, F. Schagen, 1982 .

Eigenvalues of completions of submatrices

M. A. Kaashoek, I. Gohberg, F. V. Schagen, 1989 .

Szegö-Kac-Achiezer formulas in terms of realizations of the symbol

M. A. Kaashoek, I. Gohberg, F. V. Schagen, 1987 .