1. Singular Systems of Differential Equations, Vol. 40;Campbell,1980
2. Singular Control Systems, Vol. 118;Dai,1989
3. Numerical Solution of Initial-Value Problems in Differential–Algebraic Equations;Brenan,1995
4. Analysis and Design of Descriptor Linear Systems, Vol. 23;Duan,2010
5. Linear differential algebraic equations and observers;Bobinyec,2015