1. Sum factorization of the static condensed Helmholtz equation in a three‐dimensional spectral element discretization. Issue 1 (December 2014) Authors: Huismann, Immo; Haupt, Lars; Stiller, Jörg; Fröhlich, Jochen Journal: Proceedings in applied mathematics and mechanics Issue: Volume 14:Issue 1(2014) Page Start: 969 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗