Roth's similarity theorem and rank minimization in the presence of nonderogatory or semisimple eigenvalues
(mit A. Ferrante)
Linear Multilinear Algebra 60 (2012),
doi: 10.1080/03081087.2012.672570 pdf .

The generalized Sylvester matrix equation, rank minimization and Roth's equivalence theorem
(mit Minghua Lin ),
Bull. Austr. Math. Soc. 84, 441-443 (2011). pdf

Self-inversive matrix polynomials with semisimple spectrum on the unit circle
(mit N. Ito und R. Küstner),
Oper. Matrices. 5, 495- 503 (2011). pdf

Matrix polynomials with spectral radius equal to the numerical radius,
J. Math. Anal. Appl. 381, 80-86 (2011). pdf

Characteristic and hyperinvariant subspaces over the field GF(2)
(mit P. Astuti ),
erscheint in Linear Algebra Appl.
doi:10.1016/j.laa.2011.03.047 pdf

Reachability matrices and cyclic matrices
(mit   A. Ferrante ),
Electron. J. Linear Algebra 20, 95-102 (2010). pdf

Spectraloid operator polynomials, the approximate numerical range and an Eneström-Kakeya theorem in Hilbert space
(mit J. Swoboda )
Studia Math. 198, 279-300 (2010). pdf

Hyperinvariant, characteristic and marked subspaces
(mit Pudji Astuti ),
Oper. Matrices 3, 261-270 (2009). pdf

A cancellation property of the Moore-Penrose inverse of triple products
(mit T. Damm ),
J. Aust. Math. Soc. 86, 33-44 (2009). pdf

Diagonal stability of matrices with cyclic structure and the secant condition,
Systems Control Lett. 58, 309-313 (2009). pdf

Block companion matrices, discrete-time block diagonal stability and polynomial matrices,
Oper. Matrices. 3, 111-124 (2009). pdf

Discrete-time stability of a class of hermitian polynomial matrices with positive semidefinite coefficients,
"Matrix Methods: Theory, Algorithms, Applications", Edited by V. Olshevsky and E. Tyrtyshnikov,
World Scientific Publishing, 2009, pp. 409-414. ps , pdf

Polynomial matrices with hermitian coefficients and a generalization of the Eneström-Kakeya theorem,
Oper. Matrices 2, 443-454 (2008). pdf

An Eneström-Kakeya theorem for hermitian polynomial matrices
(mit G. Dirr )
IEEE Trans. Automat. Control. 52, 2151-2153 (2007). pdf , ps

Order reduction of discrete-time algebraic Riccati equations with singular closed loop matrix
(mit A. Ferrante ),
Oper. Matrices 1, 61-70 (2007). pdf

Inertial signatures of hermitian polynomial matrices,
SIAM J. Matrix Anal. Appl. 28, 596-601 (2006). pdf

A class of marked invariant subspaces with an application to algebraic Riccati equations
(mit P. Astuti),
Automatica J. IFAC. 42, 1503-1506 (2006). pdf

Regular submodules of torsion modules over a discrete valuation domain
(mit P. Astuti),
Czechoslovak. Math. J. 56, 349-357 (2006). pdf

A parametrization of the set of solutions of the discrete-time algebraic Riccati equation based on pairs of opposite unmixed solutions,
SIAM J. Control Optim. 44, 1992-2005 (2006). pdf

Estimates for projections in Banach spaces and existence of direct complements
(mit G. Dirr ) und V. Rakočević),
Studia Math. 170, 211-216 (2005). ps , pdf

A variational characterization of canonical angles between subspaces
(mit V. Rakočević),
J. Geom. 78, 122-124 (2003). pdf

Stacked submodules of torsion modules over discrete valuation domains
(mit P. Astuti),
Bull. Austral. Math. Soc. 68, 439-447 (2003). pdf

Existence and uniqueness of unmixed solutions of the discrete-time algebraic Riccati equation
(mit D.J. Clements ),
Systems Control Lett. 50, 343-346 (2003). pdf

Computation of minimal state space realizations in Jacobson normal form
(mit N. Ito und W. Schmale),
Contemporary Mathematics 323, 221-232 (2003).

Minimal state space realizations in Jacobson normal form
(mit N. Ito und W. Schmale )
Internat. J. Control 75, 1092-1099 (2002). ps , pdf

Suboptimal Markovian smoothing estimates based on continuous curves of solutions of the algebraic Riccati inequality
(mit M. Pavon ),
Automatica J. IFAC 38, 1017-1025 (2002).

Similarity of block companion and block Toeplitz matrices,
Linear Alg. Appl. 343-344, 381-387 (2002). ps

Homomorphisms of modules associated with polynomial matrices with infinite elementary divisors
(mit P. Astuti),
Systems Control Lett. 44, 333-337 (2001). ps

Monotonicity of the optimal cost in the discrete-time regulator problem and Schur complements
(mit D. J. Clements),
Automatica J. IFAC 37, 1779-1786 (2001). ps

Pairs of modules over a principal ideal domain
(mit P. Astuti),
J. Indones. Math. Soc. 7, 1-7 (2001). pdf

Existence of unmixed solutions of the discrete-time algebraic Riccati equation and a nonstrictly bounded real lemma,
Systems Control Lett. 43, 141-147 (2001). ps

Extensions of the bounded real lemma of discrete-time systems,
Internat. J. Control. 73, 1322-1328 (2000). pdf

(C,A)-invariant modules over principal ideal domains
(mit N. Ito und W. Schmale),
SIAM J. Control Optim. 38, 1859-1876 (2000). pdf

Lipschitz continuity of oblique projections,
Proc. Amer. Math. Soc. 128, 873-876 (2000). pdf

Intervals of solutions of the discrete-time algebraic Riccati equation,
Systems Control Lett. 36, 207-212 (1999). ps, pdf

Canonical angles of unitary spaces and perturbations of direct complements,
Linear Algebra Appl. 287, 373-379 (1999). pdf

Diagonal matrix solutions of a discrete-time Lyapunov inequality,
IEEE Trans. Automat. Control 43, 442-445 (1998). ps, pdf

Spectral factorizations with unmixed pole and zero sets,
Automatica J. IFAC 33, 235-238 (1997). ps

Hermitian solutions of the discrete-time algebraic Riccati equation,
Internat. J. Control 63, 921-936 (1996). ps

Explicit polar decomposition of companion matrices,
(mit P. van den Driessche ),
Electron. J. Linear Algebra 1, 64-69 (1996). pdf

The set of positive-semidefinite solutions of the algebraic Riccati equation of discrete-time optimal control,
IEEE Trans. Automat. Control 41, 660-671 (1996). dvi, ps

The generalized Sylvester equation in polynomial matrices,
IEEE Trans. Automat. Control 41, 1372-1376 (1996). pdf

On the existence of a least and negative-semidefinite solution of the discrete-time algebraic Riccati equation,
J. Math. Systems Estimat. Control 5, 445-457 (1995). dvi, pdf

Isolated semidefinite solutions of the continuous-time algebraic Riccati equation,
Integral Equations Operator Theory 21, 362-375 (1995). ps, pdf

Lattice properties of sets of semidefinite solutions of continuous-time algebraic Riccati equations,
Automatica J. IFAC 31, 173-182 (1995) dvi, ps

Consistency of a pair of generalized Sylvester equations,
IEEE Trans. Automat. Control 39, 1014-1016 (1994). pdf

Decomposition and parametrization of semidefinite solutions of the continuous-time algebraic Riccati equation,
SIAM J. Control Optim. 32, 995-1007 (1994). pdf

A Galois correspondence of semidefinite solutions of continuous-time algebraic Riccati equations,
Linear Algebra Appl. 205/206, 1253-1270 (1994). pdf

Roth's theorems for matrix equations with symmetry constraints,
Linear Algebra Appl. 199, 357-362 (1994). pdf

Existence of positive-definite and semidefinite solutions of discrete-time algebraic Riccati equations,
Internat. J. Control 59, 463-471 (1994). pdf

Pairs of companion matrices and their simultaneous reduction to complementary triangular forms,
Linear Algebra Appl. 182, 179-197 (1993). pdf

A comparison theorem for matrix Riccati difference equations
(mit M. Pavon),
Systems Control Lett. 19, 233-239 (1992). pdf

Unmixed solutions of the discrete time algebraic Riccati equation,
SIAM J. Control Optim. 30, 867-878 (1992). pdf

Explicit solutions of the matrix equation  ΣAⁱX D _i = C,
SIAM J. Matrix Anal. Appl. 13, 1123-1130 (1992). pdf

Monotonicity and maximality of solutions of discrete-time algebraic Riccati equations,
J. Math. Systems Estimat. Control. 2, 219-235 (1992).

Geometry of the discrete-time algebraic Riccati equation,
J. Math. Systems Estimat. Control. 2, 123-132 (1992).

Simultaneous reduction to triangular and companion forms of pairs of matrices: the case rank(I-AZ) = 1
(mit H. Bart),
Linear Algebra Appl. 150, 443-461 (1991). pdf

Normal forms of symplectic pencils and the discrete-time algebraic Riccati equation,
Linear Algebra Appl. 147, 411-440 (1991). pdf

On the history of the Bezoutian and the resultant matrix,
Linear Algebra Appl. 128, 27-34 (1990). pdf

Extreme properties of products of invariant factors,
Arch. Math. 55, 117-119 (1990). pdf