@article{1993-williams-root
,note={URL: {\tt http://cr.yp.to/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1993/\allowbreak williams-root}}
,author={Kenneth S. Williams and Kenneth Hardy}
,ISSN={0025--5718}
,journal={Mathematics of Computation}
,MR={93k:11003}
,pages={475--483}
,title={{A refinement of H. C. Williams' $q$th root algorithm}}
,volume={61}
,year={1993}
}