@article{M2AN_2012__46_3_535_0,
     author = {Chorin, Alexandre J. and Tu, Xuemin},
     title = {An iterative implementation of the implicit nonlinear filter},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {535--543},
     publisher = {EDP-Sciences},
     volume = {46},
     number = {3},
     year = {2012},
     doi = {10.1051/m2an/2011055},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/m2an/2011055/}
}