@article{historyplaygroundatoolfordiscovering,
  title = {History Playground: A Tool for Discovering Temporal Trends in Massive Textual Corpora},
  author = {Thomas Lansdall-Welfare and Nello Cristianini},
  year = {2018},
  eprint = {1806.01185},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1806.01185v1},
}