Output-induced subspaces, invariant directions and interpolation in linear discrete-time stochastic systems. (Department of Mathematics. Royal Institute of Technology. TRITA/MAT-94-20.)
Zeros of spectral factors, the geometry of splitting subspaces, and the algebraic Riccati inequality. (Department of Mathematics. Royal Institute of Technology. TRITA/MAT-94-40.)
On the numerical computation of an integral formula containing Bessel functions. (Working paper of the Laboratory of Operations Research and Decision Systems (LORDS) WP 94-3.)