@article{hyytia-peva-2014,
  title = {Task Assignment in a Server Farm with Switching Delays and General Energy-Aware Cost Structure},
  author = {Esa Hyyti{\"a} and Rhonda Righter and Samuli Aalto},
  journal = {Performance Evaluation},
  url = {http://dx.doi.org/10.1016/j.peva.2014.01.002},
  volume = {75--76},
  month = {May-June},
  year = {2014},
  pages = {17--35},
}