A unified view of Balanced Truncation and Singular Perturbation Approximations. - Philip E. Pare; Alma T. Wilson; Mark K. Transtrum; Sean C. Warnick (ACC, 2015)

Model Boundary Approximation Method as a Unifying Framework for Balanced Truncation and Singular Perturbation Approximation. - Philip E. Paré; David Grimsman; Alma T. Wilson; Mark K. Transtrum; Sean Warnick (IEEE Trans. Autom. Control., 2019)