@techreport {icl:391,
	title = {Computing the Conditioning of the Components of a Linear Least Squares Solution},
	journal = {University of Tennessee Computer Science Technical Report},
	number = {UT-CS-07-604, (also LAPACK Working Note 193)},
	year = {2007},
	month = {2007-01},
	author = {Marc Baboulin and Jack Dongarra and Serge Gratton and Julien Langou}
}
