%0 Journal Article %A Douglas, Jim %A Hensley, Jeffrey L. %A Roberts, Jean E. %T An alternating-direction iteration method for Helmholtz problems %J Applications of Mathematics %D 1993 %P 289-300 %V 38 %N 4-5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1993.104557/ %R 10.21136/AM.1993.104557 %G en %F 10_21136_AM_1993_104557