Multigrid optimization methods for linear and bilinear elliptic optimal control problems. - Michelle Vallejos; Alfio Borzì (Computing, 2008)

Implementation and analysis of multigrid schemes with finite elements for elliptic optimal control problems. - Oliver Lass; Michelle Vallejos; Alfio Borzì; C. C. Douglas (Computing, 2009)

MGOPT with gradient projection method for solving bilinear elliptic optimal control problems. - Michelle Vallejos (Computing, 2010)

Multigrid Optimization Methods for the Optimal Control of Convection-Diffusion Problems with Bilinear Control. - Alfio Borzì; Eun-Jae Park; Michelle Lass (J. Optim. Theory Appl., 2016)