Source: J.J. DiStefano III, A.R. Stubberud and I.J. Williams Schaum’s Outline of Theory and Problems of Feedback and Control Systems 2/e McGraw-Hill
Source:J.J.DiStefanoIII,A.R.StubberudandI.J.WilliamsSchaum’sOutlineofTheoryandProblemsofFeedbackandControlSystems2/eMcGraw-Hill