Sascha Hunold Thomas Rauber Gudula Rünger Hierarchical Matrix-Matrix Multiplication Based on Multiprocessor Tasks. 1-8 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3037&spage=1 2004 conf/iccS/2004-2 International Conference on Computational Science db/conf/iccS/iccS2004-2.html#HunoldRR04