Numerical solution of generalized Lyapunov equations. - Thilo Penzl (Adv. Comput. Math., 1998)

A Cyclic Low-Rank Smith Method for Large Sparse Lyapunov Equations. - Thilo Penzl (SIAM J. Sci. Comput., 1999)

Numerical solution of large-scale Lyapunov equations, Riccati equations, and linear-quadratic optimal control problems. - Peter Benner; Jing-Rebecca Li; Thilo Penzl (Numer. Linear Algebra Appl., 2008)