@article{M2AN_1998__32_1_117_0,
     author = {Ciavaldini, J.-F. and Foucher, F.},
     title = {Optimal control and regularization to model the atmospheric electron content from satellite measurements},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {117--130},
     publisher = {Elsevier},
     volume = {32},
     number = {1},
     year = {1998},
     mrnumber = {1619597},
     zbl = {0910.76097},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1998__32_1_117_0/}
}