1.
Liberzon D. Calculus of Variations and Optimal Control Theory: A Concise Introduction. Princeton University Press; 2012.
   
  
    2.
Barnett S, Cameron RG. Introduction to Mathematical Control Theory. Vol Oxford applied mathematics and computing science series. 2nd ed. Clarendon Press; 1985.
   
  
    3.
Heij C, Ran ACM, Schagen F van. Introduction to Mathematical Systems Theory: Linear Systems, Identification and Control. Birkhäuser; 2007.
   
  
    4.
Hendricks E, Jannerup OE, Sørensen PH. Linear Systems Control: Deterministic and Stochastic Methods. Springer; 2008.