@article{1,
 author = {Long Chen,,Chin},
 title = {Formulas for the solutions of quadratic equations over ${FG}(2^m)$},
 journal = {IEEE Trans. Inform. Theory},
 volume = {28},
 number = {5},
 year = {1982},
 issn = {},
 pages = {792--794},
 publisher = {},
 address = {}
 }
 
  @report{2,
 author={Maurer,,Ueli and Wolf,,Stefan}
 title={On the complexity of breaking the Diffie-Hellman protocol}
 institution={Institute for TheoreticalComputer Science}
 type={techreport}
 number={244}
 year={1996}
 address={ETH Zurich}
 }