1. Stengel,RobertF.AircraftFlightDynamics(tobepublished),Chaps.1-6,Eq.4.1-100and4.1-101.
2. McLean,Donald.AutomaticFlightControlSystems,PrenticeHall,NewYork,1990,p.34,159-61
3. Stengel,RobertF.OptimalControlandEstimation,DoverPublications,NewYork,1986.Chap.6.