%0 Journal Article %T Effective semi-analytic integration for hypersingular Galerkin boundary integral equations for the Helmholtz equation in 3D %A Zapletal, Jan %A Bouchala, Jiří %J Applications of Mathematics %V 59 %N 5 %P 527-542 %@ 0862-7940 %D 2014-10-01 %I Springer Berlin Heidelberg %~ DeepDyve