@article{NUMA_1985__46_133011,
     author = {C. Canuto and S.I. Hariharan and L. Lustman},
     title = {Spectral {Methods} for {Exterior} {Elliptic} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {505--520},
     publisher = {mathdoc},
     volume = {46},
     year = {1985},
     zbl = {0548.65082},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1985__46_133011/}
}