@article{GDZPPN001169246, title = {Numerical Solution of Laplace Equation for an Annular Region.}, journal = {Numerische Mathematik}, volume = {15}, year = {1970}, pages = {231-242}, zbl = {0203.48401}, url = {http://dml.mathdoc.fr/item/GDZPPN001169246} }
CHOW, T.S.; MILNES, H.W. Numerical Solution of Laplace Equation for an Annular Region.. Numerische Mathematik, Tome 15 (1970) pp. 231-242. http://gdmltest.u-ga.fr/item/GDZPPN001169246/