Lilun Zhang Xiping Gong Junqiang Song Jianglin Hu Parallel Preconditioned GMRES Solvers for 3-D Helmholtz Equations in Regional Non-hydrostatic Atmosphere Model. 287-290 2008 CSSE (3) http://dx.doi.org/10.1109/CSSE.2008.898 conf/csse/2008-3 db/conf/csse/csse2008-3.html#ZhangGSH08