Tell71'

@article{DBLP:journals/ipm/Tell71,
  author    = {Bjorn V. Tell},
  title     = {Retrieval efficiency from titles and the cost of indexing},
  journal   = {Information Storage and Retrieval},
  volume    = {7},
  number    = {5},
  year      = {1971},
  pages     = {241-243},
  ee        = {http://dx.doi.org/10.1016/0020-0271(71)90052-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}