@article{M2AN_1993__27_5_535_0,
     author = {Chavent, G. and Kunisch, K.},
     title = {Regularization in state space},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {535--564},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {27},
     number = {5},
     year = {1993},
     mrnumber = {1239815},
     zbl = {0790.65050},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1993__27_5_535_0/}
}