Kalman Filter Based State Estimation for Linearized Twin Rotor System. - Khawaja Shafiq Haider; Ijaz Hussain Kazmi; M. Inam-ur Rehman (FIT, 2011)

Frequency limited Gramians-based structure preserving model order reduction for discrete time second-order systems. - Khawaja Shafiq Haider; Abdul Ghafoor; Muhammad Imran 003; Fahad Mumtaz Malik (Int. J. Control, 2019)

Time-limited Gramians-based model order reduction for second-order form systems. - Khawaja Shafiq Haider; Abdul Ghafoor; Muhammad Imran 003; Fahad Mumtaz Malik (Trans. Inst. Meas. Control, 2019)

Infinite and Finite Time-Frequency Interval Based Variants of Second-Order Balanced Truncation for Stable and Unstable Systems. - Sadaqat Ali; Rosmiwati Mohd-Mokhtar; Khawaja Shafiq Haider (IEEE Access, 2020)