Linear?quadratic regulator design for singularly perturbed systems by unified approach using d operators. - Kyu-Hong Shim; M. Edwin Sawan (Int. J. Syst. Sci., 2001)

Near-optimal state feedback design for singularly perturbed systems by unified approach. - Kyu-Hong Shim; M. Edwin Sawan (Int. J. Syst. Sci., 2002)

Rationalization of singularly perturbed continuous systems with time delays. - Kyu-Hong Shim; M. Edwin Sawan (Int. J. Syst. Sci., 2003)

Unified Modeling for Singularly Perturbed Systems by Delta Operators: Pole Assignment Case. - Kyungtae Lee; Kyu-Hong Shim; M. Edwin Sawan (AIS, 2004)

Singularly perturbed unified systems with low sensitivity to model reduction. - Kyu-Hong Shim; M. Edwin Sawan (ACC, 2005)

Singularly perturbed unified time systems with low sensitivity to model reduction using delta operators. - Kyu-Hong Shim; M. Edwin Sawan (Int. J. Syst. Sci., 2006)