@article{1985-elgamal-log
,note={Note: see also older version $0}
,author={Taher ElGamal}
,ISSN={0018--9448}
,journal={IEEE Transactions on Information Theory}
,MR={86j:11130}
,pages={473--481}
,title={{A subexponential-time algorithm for computing discrete logarithms over GF$(p^2)$}}
,volume={31}
,year={1985}
}