Butt, M.
(2020).
 A multigrid solver for control-constrained Navier-Stokes control problems.
<em>Acta Mathematica Universitatis Comenianae, 89</em>(2), 261-277.
Retrieved from <a href="http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/amuc/article/view/1323" target="_new">http://www.iam.fmph.uniba.sk/amuc/ojs/index.php/amuc/article/view/1323</a>