Rational Krylov methods for optimal ℒ2 model reduction. - Caleb Magruder; Christopher A. Beattie; Serkan Gugercin (CDC, 2010)

Linear time-periodic dynamical systems: An H2 analysis and a model reduction framework. - Caleb C. Magruder; Serkan Gugercin; Christopher A. Beattie (CoRR, 2017)

ℋ2-Optimal Model Reduction Using Projected Nonlinear Least Squares. - Jeffrey M. Hokanson; Caleb C. Magruder (SIAM J. Sci. Comput., 2020)