TY - JOUR AU - H. Schippers TI - Multigrid Methods for Boundary Integral Equations. JO - Numerische Mathematik PY - 1985 SP - 351 EP - 364 VL - 46 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NUMA_1985__46_133001/ ID - NUMA_1985__46_133001 ER -