1. LAPACK Users' Guide;Anderson,1999
2. Introduction to Mathematical Control Theory;Barnett,1985
3. Matrix Methods in Stability Theory;Barnett,1970
4. A numerical algorithm to solve AT XA – X = Q;Barraud;IEEE Trans. Autom. Control,1977
5. Algorithm 432: solution of the matrix equation AX + XB = C;Bartels;Comm. ACM,1972