@article{M2AN_1987__21_4_627_0,
     author = {El Badia, A.},
     title = {Identifiabilit\'e d'un coefficient variable en espace dans une \'equation parabolique},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {627--639},
     year = {1987},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {21},
     number = {4},
     mrnumber = {921830},
     zbl = {0636.35086},
     language = {fr},
     url = {https://www.numdam.org/item/M2AN_1987__21_4_627_0/}
}