@ARTICLE {5301,
author={J. J. Júdice and M. Brás and W.W.H. Hager},
doi={10.1007/s11750-010-0161-9},
journal={TOP},
title={An investigation of feasible descent algorithms for estimating the condition number of a matrix},
year={2012},
month={October},
volume={20},
number={3},
pages={791-809},
ISSN={1134-5764}
}