Discrete Methods for Optimal Control Problems. - Ion Chryssoverghi (Numerical Methods and Application, 2002)

Approximation Methods for Nonconvex Parabolic Optimal Control Problems Using Relaxed Controls. - Ion Chryssoverghi (LSSC, 2003)

Progressively Refining Discrete Gradient Projection Method for Semilinear Parabolic Optimal Control Problems. - Ion Chryssoverghi (NAA, 2004)

Approximate Gradient Projection Method with Runge-Kutta Schemes for Optimal Control Problems. - Ion Chryssoverghi; John Coletsos; B. Kokkinis (Comput. Optim. Appl., 2004)

Approximate Gradient/Penalty Methods with General Discretization Schemes for Optimal Control Problems. - Ion Chryssoverghi (LSSC, 2005)

Mixed Discretization-Optimization Methods for Nonlinear Elliptic Optimal Control Problems. - Ion Chryssoverghi (Numerical Methods and Applications, 2006)

Descent-Penalty Methods for Relaxed Nonlinear Elliptic Optimal Control Problems. - Ion Chryssoverghi; Jürgen Geiser (LSSC, 2007)

Classical and Relaxed Optimization Methods for Nonlinear Parabolic Optimal Control Problems. - Ion Chryssoverghi; John Coletsos; B. Kokkinis (LSSC, 2009)

Classical and Relaxed Progressively Refining Discretization-Optimization Methods for Optimal Control Problems Defined by Ordinary Differential Equations. - Ion Chryssoverghi; John Coletsos; B. Kokkinis (LSSC, 2011)