@article{COCV_2002__8__423_0,
     author = {Chavent, Guy and Kunisch, Karl},
     title = {The output least squares identifiability of the diffusion coefficient from an $H^1$-observation in a {2-D} elliptic equation},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {423--440},
     year = {2002},
     publisher = {EDP Sciences},
     volume = {8},
     doi = {10.1051/cocv:2002028},
     zbl = {1092.93042},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/cocv:2002028/}
}