@article{1991-lamacchia-log ,note={URL: {\tt http://cr.yp.to/\allowbreak bib/\allowbreak entries.html\#\allowbreak 1991/\allowbreak lamacchia-log}} ,author={Brian A. LaMacchia and Andrew M. Odlyzko} ,ISSN={0925--1022} ,journal={Designs, Codes and Cryptography} ,MR={92j:11148} ,pages={47--62} ,title={{Computation of discrete logarithms in prime fields}} ,volume={1} ,year={1991} }