1. J. Abels, P. Benner, CAREX—a collection of benchmark examples for continuous-time algebraic Riccati equations (version 2.0). SLICOT working note 1999-14, WGS, 1999. Available from: .
2. LAPACK Users’ Guide;Anderson,1999
3. P. Benner, Computational methods for linear-quadratic optimization, Supplemento ai Rendiconti del Circolo Matematico di Palermo, Serie II 58 (1999) 21–56.
4. Symplectic balancing of Hamiltonian matrices;Benner;SIAM J. Sci. Comput.,2000
5. Algorithm 800. Fortran 77 subroutines for computing the eigenvalues of Hamiltonian matrices I: The square-reduced method;Benner;ACM Trans. Math. Software,2000