Analysis and finite element approximation of optimal control problems for the stationary Navier-Stokes equations with Dirichlet controlsM. D. Gunzburger, L. S. Hou and Th. P. SvobodnyESAIM: M2AN, 25 6 (1991) 711-748DOI: https://doi.org/10.1051/m2an/1991250607111