A weak maximum principle for control problems with state constraints. - Maria do Rosário de Pinho; Maria Margarida A. Ferreira; Fernando A. C. C. Fontes (ECC, 2001)

Nondegeneracy and normality in necessary conditions involving Hamiltonian inclusions for state-constrained optimal control problems. - Md. R. de Pinho; Maria Margarida A. Ferreira; Fernando A. C. C. Fontes (CDC, 2004)

Unmaximized necessary conditions for constrained control problems. - Md. R. de Pinho; Maria Margarida A. Ferreira; Fernando A. C. C. Fontes (CDC, 2004)

On the regularity of optimal controls for a class of problems with state constraints. - Maria Margarida A. Ferreira (Int. J. Syst. Sci., 2006)

Local Minima of Quadratic Functionals and Control of Hydro-electric Power Stations. - Maria Margarida A. Ferreira; A. F. Ribeiro; Georgi V. Smirnov (J. Optim. Theory Appl., 2015)

Optimal Control with Sweeping Processes: Numerical Method. - Md. R. de Pinho; Maria Margarida A. Ferreira; Georgi V. Smirnov (J. Optim. Theory Appl., 2020)

Optimal Control involving Sweeping Processes with End Point Constraints. - Maria do Rosário de Pinho; Maria Margarida A. Ferreira; Georgi V. Smirnov (CDC, 2021)

A Maximum Principle for Optimal Control Problems Involving Sweeping Processes with a Nonsmooth Set. - Maria do Rosário de Pinho; Maria Margarida A. Ferreira; Georgi Smirnov (J. Optim. Theory Appl., 2023)

Optimal control problem with state constraints via penalty functions. - Maria do Rosário de Pinho; Maria Margarida A. Ferreira; Georgi Smirnov (Syst. Control. Lett., 2024)

Optimal Control Problem with Regular Mixed Constraints via Penalty Functions. - Maria do Rosário de Pinho; Maria Margarida A. Ferreira; Georgi Smirnov (J. Optim. Theory Appl., 2024)

Optimal control problem with nonregular mixed constraints via penalty functions. - Md. R. de Pinho; Maria Margarida A. Ferreira; Georgi Smirnov (Syst. Control. Lett., 2025)