@article{DBLP:journals/ipl/ElkindO13,
  title = "On the hardness of finding subsets with equal average",
  author = "Edith Elkind and James B. Orlin",
  year = "2013",
  journal = "Inf. Process. Lett.",
  number = "13",
  pages = "477-480",
  url = "http://dx.doi.org/10.1016/j.ipl.2013.04.001",
  volume = "113",
}