A New Software Package for Linear Differential-Algebraic Equations. - Peter Kunkel; Volker Mehrmann; Werner Rath; Jörg Weickert (SIAM J. Sci. Comput., 1997)

Analysis and Numerical Solution of Control Problems in Descriptor Form. - Peter Kunkel; Volker Mehrmann; Werner Rath (Math. Control. Signals Syst., 2001)