@article{M2AN_2012__46_2_491_0,
     author = {Kahlbacher, Martin and Volkwein, Stefan},
     title = {POD \protect\emph{a-posteriori }error based inexact {SQP} method for bilinear elliptic optimal control problems},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {491--511},
     publisher = {EDP-Sciences},
     volume = {46},
     number = {2},
     year = {2012},
     doi = {10.1051/m2an/2011061},
     zbl = {1272.49059},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an/2011061/}
}