Lineare Filterung multivariater verallgemeinerter diskreter schwach stationärer stochastischer Prozesse und schwache Konvergenz nichtnegativ hermitescher Masse. - Bernd Fritzsche; Bernd Kirstein (1983)

On a class of extremal solutions of a moment problem for rational matrix-valued functions in the nondegenerate case II. - Bernd Fritzsche; Bernd Kirstein; Andreas Lasarow (J. Comput. Appl. Math., 2010)

Weyl theory and explicit solutions of direct and inverse problems for a Dirac system with rectangular matrix potential - Bernd Fritzsche; Bernd Kirstein; Inna Ya. Roitberg; Alexander L. Sakhnovich (CoRR, 2011)