A homotopy approach for stabilizing single-input systems with control structure constraints. - Makarand S. Phatak; S. Sathiya Keerthi (Autom., 1992)

Regional pole placement of multivariable systems under control structure constraints. - S. Sathiya Keerthi; Makarand S. Phatak (IEEE Trans. Autom. Control., 1995)