@ARTICLE{IK13,
author = {{I}wen, {M.} and {K}rahmer, {F.}},
title = {Fast Subspace Approximation via Greedy Least-Squares},
journal = {Constr. Approx.},
year = {to appear},
owner = {f.krahmer},
timestamp = {2013.12.05},
url = {http://num.math.uni-goettingen.de/~f.krahmer/IK13.pdf}
}