%0 Journal Article %A Kleefeld, Andreas %A Lin, Tzu-Chu %T A Global Galerkin Method for Solving the Exterior Neumann Problem for the Helmholtz Equation Using Panich's Integral Equation Approach %J SIAM journal on scientific computing %V 35 %N 3 %@ 1095-7197 %C Philadelphia, Pa. %I SIAM %M FZJ-2017-01751 %P A1709 - A1735 %D 2013 %F PUB:(DE-HGF)16 %9 Journal Article %R 10.1137/120873066 %U https://juser.fz-juelich.de/record/827637