@article{CRMATH_2003__336_8_691_0,
     author = {Dan-Gabriel Calugaru and Jean-Marie Crolet},
     title = {Gradient computation in a nonlinear inverse problem},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {691--696},
     publisher = {Elsevier},
     volume = {336},
     number = {8},
     year = {2003},
     doi = {10.1016/S1631-073X(03)00130-4},
     language = {en},
}