@article{KYB_1993_29_3_a3,
     author = {Chleboun, Jan},
     title = {Hybrid variational formulation of an elliptic state equation applied to an optimal shape problem},
     journal = {Kybernetika},
     pages = {231--248},
     year = {1993},
     volume = {29},
     number = {3},
     mrnumber = {1231869},
     zbl = {0805.49024},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1993_29_3_a3/}
}