@article{HKMPS02,
  author =	 {Joseph M. Hellerstein and Elias Koutsoupias and
                  Daniel P. Miranker and Christos H. Papadimitriou and
                  Vasilis Samoladas},
  title =	 {On a model of indexability and its bounds for range
                  queries},
  journal =	 {Journal of the ACM (JACM)},
  volume =	 {49},
  number =	 {1},
  year =	 {2002},
  issn =	 {0004-5411},
  pages =	 {35--55},
  doi =		 {http://doi.acm.org/10.1145/505241.505244},
  publisher =	 {ACM Press},
}