TY - RPRT TI - Constructing efficient substructure-based preconditioners for BEM systems of equations AU - D'Araujo, Celio AU - D'Azevedo, Ed F AU - Gray, Leonard J PY - 2011 DO - 10.1016/j.enganabound.2010.09.001 UR - https://www.osti.gov/biblio/1004665 ID - 1004665 ER -