@article{PORMA_1999__56_4_48470,
     author = {Cardoso, F. and Cuevas, C.},
     title = {On the hyperbolic {Dirichlet} to {Neumann} functional.},
     journal = {Portugaliae mathematica},
     pages = {389--408},
     publisher = {mathdoc},
     volume = {56},
     number = {4},
     year = {1999},
     zbl = {0940.35124},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1999__56_4_48470/}
}