@article{COCV_2003__9__67_0,
     author = {Couchouron, Jean-Fran\c{c}ois and Ligarius, P.},
     title = {Nonlinear observers in reflexive {Banach} spaces},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {67--103},
     publisher = {EDP-Sciences},
     volume = {9},
     year = {2003},
     doi = {10.1051/cocv:2003001},
     mrnumber = {1957091},
     zbl = {1069.47511},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv:2003001/}
}