@article{roelleke2015,
  title =	 {{Harmony Assumptions in Information Retrieval and
                  Social Networks}},
  author =	 {Roelleke, Thomas and Kaltenbrunner, Andreas and
                  Baeza-Yates, Ricardo},
  journal =	 {The Computer Journal},
  pages =	 {bxv031},
  year =	 2015,
  publisher =	 {Br Computer Soc}
}