@misc{9636,
  author = {Lidong Chen},
  title = {Recommendation for Key Derivation through Extraction-then-Expansion},
  year = {2011},
  month = {2011-11-28},
  publisher = {Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.SP.800-56C},
  language = {en},
}