@article{GDZPPN001179357, title = {Multigrid Methods for Boundary Integral Equations.}, journal = {Numerische Mathematik}, volume = {46}, year = {1985}, pages = {351-364}, zbl = {0543.65015}, url = {http://dml.mathdoc.fr/item/GDZPPN001179357} }
Schippers, H. Multigrid Methods for Boundary Integral Equations.. Numerische Mathematik, Tome 46 (1985) pp. 351-364. http://gdmltest.u-ga.fr/item/GDZPPN001179357/