Linearization of discrete-time systems E Aranda-Bricaire, Ü Kotta, CH Moog SIAM Journal on Control and Optimization 34 (6), 1999-2023, 1996 | 259 | 1996 |

Comments on" On the stability of discrete-time sliding mode control systems"[with reply] U Kotta, SZ Sarpturk, Y Istefanopulos IEEE Transactions on Automatic Control 34 (9), 1021-1022, 1989 | 103 | 1989 |

Inversion method in the discrete-time nonlinear control systems synthesis problems Ü Kotta Springer, 2006 | 100 | 2006 |

Transfer equivalence and realization of nonlinear higher order input–output difference equations Ü Kotta, ASI Zinober, P Liu Automatica 37 (11), 1771-1778, 2001 | 95 | 2001 |

Two approaches for state space realization of narma models: bridging the gap Ü Kotta, N Sadegh Mathematical and Computer Modelling of Dynamical Systems 8 (1), 21-32, 2002 | 61 | 2002 |

Algebraic formalism of differential one-forms for nonlinear control systems on time scales. Z Bartosiewicz, Ü Kotta, E Pawłuszewicz, M Wyrwas Proceedings of the Estonian Academy of Sciences, Physics, Mathematics 56 (3), 2007 | 58 | 2007 |

On realizability of neural networks-based input–output models in the classical state-space form Ü Kotta, FN Chowdhury, S Nõmm Automatica 42 (7), 1211-1216, 2006 | 54 | 2006 |

Irreducibility, reduction and transfer equivalence of nonlinear input–output equations on homogeneous time scales U Kotta, Z Bartosiewicz, E Pawłuszewicz, M Wyrwas Systems & control letters 58 (9), 646-651, 2009 | 49 | 2009 |

Tracking control of nonlinear pneumatic actuator systems using static state feedback linearization of the input-output map. J Wang, Ü Kotta, J Ke Proceedings of the Estonian Academy of Sciences, Physics, Mathematics 56 (1), 2007 | 46 | 2007 |

Realization of discrete-time nonlinear input–output equations: polynomial approach Ü Kotta, M Tõnso Automatica 48 (2), 255-262, 2012 | 45 | 2012 |

Submersive rational difference systems and their accessibility M Halás, Ü Kotta, Z Li, H Wang, C Yuan Proceedings of the 2009 international symposium on Symbolic and algebraic …, 2009 | 45 | 2009 |

Control systems on regular time scales and their differential rings Z Bartosiewicz, Ü Kotta, E Pawłuszewicz, M Wyrwas Mathematics of control, signals, and systems 22, 185-201, 2011 | 43 | 2011 |

Output feedback linearization of nonlinear discrete time systems R Pothin, Ü Kotta, CH Moog IFAC Proceedings Volumes 33 (13), 181-186, 2000 | 42 | 2000 |

Right inverse of a discrete time non-linear system U Kotta International journal of control 51 (1), 1-9, 1990 | 42 | 1990 |

Neural networks based ANARX structure for identification and model based control E Petlenkov, S Nomm, U Kotta 2006 9th International Conference on Control, Automation, Robotics and …, 2006 | 38 | 2006 |

Transfer function approach to the model matching problem of nonlinear systems M Halás, Ü Kotta, CH Moog IFAC Proceedings Volumes 41 (2), 15197-15202, 2008 | 36 | 2008 |

Measurement feedback disturbance decoupling in discrete-time nonlinear systems A Kaldmäe, Ü Kotta, A Shumsky, A Zhirabok Automatica 49 (9), 2887-2891, 2013 | 34 | 2013 |

Decomposition of discrete-time nonlinear control systems U Kotta PROCEEDINGS-ESTONIAN ACADEMY OF SCIENCES PHYSICS MATHEMATICS 54 (3), 154, 2005 | 34 | 2005 |

On a new type of neural-network-based input-output model: the ANARMA structure Ü Kotta, S Nõmm, FN Chowdhury IFAC Proceedings Volumes 34 (6), 1535-1538, 2001 | 34 | 2001 |

Feedback linearization and lattice theory Ü Kotta, M Tõnso, AY Shumsky, AN Zhirabok Systems & Control Letters 62 (3), 248-255, 2013 | 30 | 2013 |