@article{NUMA_1975__25_132371,
     author = {R.W. Thatcher},
     title = {The {Use} of {Infinite} {Grid} {Refinements} at {Singularities} in the {Solution} of {Laplace's} {Equation.}},
     journal = {Numerische Mathematik},
     pages = {163--178},
     publisher = {mathdoc},
     volume = {25},
     year = {1975},
     zbl = {0299.65061},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1975__25_132371/}
}