@article{unknown2017evaluation,
  title={Evaluation of a proposal for reliable low-cost grid power with 100% wind, water, and solar},
  author={Christopher Clack and Staffan Qvist and Jay Apt and Morgan Bazilian and Paul Hines and et al.},
  journal={Proceedings of the National Academy of Sciences},
  journalpage={http://www.pnas.org/content/early/2017/06/16/1610381114.short},
  year={2017},
  citations={}
}