@article{GMJ_2003__10_3_50974,
     author = {Kress, R.},
     title = {A factorization method for an inverse {Neumann} problem for harmonic vector fields.},
     journal = {Georgian Mathematical Journal},
     pages = {549--560},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {2003},
     zbl = {1048.31005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_2003__10_3_50974/}
}