Comment on "Cooling by heating: refrigeration powered by photons".

@article{Levy2012CommentO,
  title={Comment on "Cooling by heating: refrigeration powered by photons".},
  author={Amikam Levy and Robert Alicki and Ronnie Kosloff},
  journal={Physical review letters},
  year={2012},
  volume={109 24},
  pages={
          248901; discussion 248902
        }
}
A Comment on the Letter by B. Cleuren, B. Rutten, and C. Van den Broeck, Phys. Rev. Lett. 108, 120603 (2012). The authors of the Letter offer a Reply. 
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