State-Space Controller Design for the Fractional-Order Regulated System
  In this paper we will present a mathematical description and analysis of a fractional-order regulated system in the state space and the state-space controller design based on placing the closed-loop poles on the complex plane. Presented are the results of simulations and stability investigation of this system. 
L. Dorcak, I. Petras, I. Kostial, J. Terpak (Technical University of   Kosice)