Y. Liang Jim Weston Marek Szularz Polynomial Preconditioning for Specially Structured Linear Systems of Equations. 587-591 2001 conf/europar/2001 Euro-Par http://link.springer.de/link/service/series/0558/bibs/2150/21500587.htm db/conf/europar/europar2001.html#LiangWS01