The Riccati equation for optimal control problems with mixed state-control constraints: necessity and sufficiency V Zeidan SIAM Journal on Control and Optimization 32 (5), 1297-1321, 1994 | 133 | 1994 |

Calculus of variations on time scales: weak local piecewise Crd1 solutions with variable endpoints R Hilscher, V Zeidan Journal of Mathematical Analysis and Applications 289 (1), 143-166, 2004 | 128 | 2004 |

Weak maximum principle and accessory problem for control problems on time scales R Hilscher, V Zeidan Nonlinear Analysis: Theory, Methods & Applications 70 (9), 3209-3226, 2009 | 90 | 2009 |

Nonsmooth optimum problems with constraints Z Páles, VM Zeidan SIAM Journal on Control and Optimization 32 (5), 1476-1502, 1994 | 85 | 1994 |

First-and second-order necessary conditions for control problems with constraints Z Páles, V Zeidan Transactions of the American Mathematical Society 346 (2), 421-453, 1994 | 71 | 1994 |

First and second order sufficient conditions for optimal control and the calculus of variations V Zeidan Applied Mathematics and Optimization 11 (1), 209-226, 1984 | 69 | 1984 |

The conjugate point condition for smooth control sets V Zeidan, P Zezza Journal of mathematical analysis and applications 132 (2), 572-589, 1988 | 65 | 1988 |

Sufficient conditions for the generalized problem of Bolza V Zeidan Transactions of the American Mathematical Society 275 (2), 561-586, 1983 | 57 | 1983 |

Optimal control problems with set-valued control and state constraints Z Páles, V Zeidan SIAM Journal on Optimization 14 (2), 334-358, 2003 | 52 | 2003 |

Necessary conditions for optimal control problems: conjugate points V Zeidan, P Zezza SIAM journal on control and optimization 26 (3), 592-608, 1988 | 49 | 1988 |

Coupled points in the calculus of variations and applications to periodic problems V Zeidan, PL Zezza Transactions of the American Mathematical Society 315 (1), 323-335, 1989 | 42 | 1989 |

Symplectic difference systems: variable stepsize discretization and discrete quadratic functionals R Hilscher, V Zeidan Linear algebra and its applications 367, 67-104, 2003 | 41 | 2003 |

Second order sufficiency criteria for a discrete optimal control problem R Hilscher, V Zeidan The Journal of Difference Equations and Applications 8 (6), 573-603, 2002 | 41 | 2002 |

Discrete optimal control: second order optimality conditions R Hilscher, V Zeidan The Journal of Difference Equations and Applications 8 (10), 875-896, 2002 | 39 | 2002 |

Another Jacobi sufficiency criterion for optimal control with smooth constraints D Orrell, V Zeidan Journal of optimization theory and applications 58 (2), 283-300, 1988 | 38 | 1988 |

Riccati equations for abnormal time scale quadratic functionals R Hilscher, V Zeidan Journal of Differential Equations 244 (6), 1410-1447, 2008 | 36 | 2008 |

Sufficient conditions for variational problems with variable endpoints: coupled points V Zeidan Applied Mathematics and Optimization 27 (2), 191-209, 1993 | 35 | 1993 |

Applications of time scale symplectic systems without normality R Hilscher, V Zeidan Journal of mathematical analysis and applications 340 (1), 451-465, 2008 | 34 | 2008 |

Sufficiency criteria via focal points and via coupled points V Zeidan SIAM journal on control and optimization 30 (1), 82-98, 1992 | 34 | 1992 |

Sufficiency and the Jacobi condition in the calculus of variations FH Clarke, V Zeidan Canadian Journal of Mathematics 38 (5), 1199-1209, 1986 | 34 | 1986 |