@techreport {icl:645,
	title = {Hierarchical QR Factorization Algorithms for Multi-Core Cluster Systems},
	journal = {University of Tennessee Computer Science Technical Report (also Lawn 257)},
	number = {UT-CS-11-684},
	year = {2011},
	month = {2011-10},
	keywords = {magma, plasma},
	author = {Jack Dongarra and Mathieu Faverge and Thomas Herault and Julien Langou and Yves Robert}
}
