1. The operator pseudoinverse in control and system identification;Beutler,1976
2. Matrizenrechnung II;Gantmacher,1959
3. The Numerical Treatment of Differential-Algebraic Equations;Griepentrog,1986
4. On correctness and numerical treatment of boundary value problems in DAE's;März;Zhurnal vychisl. matem. i matem. fiziki,1986
5. On tractability with index 2;März,1986