@article{11360,
  author = {Wei Zhang and Xing Cai and Sverre Holm},
  title = {Time-Fractional Heat Equations and Negative Absolute Temperatures},
  year = {2014},
  journal = {Computers \& Mathematics with Applications},
  volume = {67},
  number = {1},
  pages = {164-171},
  doi = {10.1016/j.camwa.2013.11.007},
}