@InProceedings{ferragina:stoc95,
  author = {Paolo Ferragina and Roberto Grossi},
  title = {A Fully-dynamic data structure for external substring search},
  booktitle = {Proceedings of the 27th Annual ACM Symposium on Theory of
  Computing},
  year = {1995},
  pages = {693--702},
  publisher = {ACM Press},
  address = {Las Vegas},
  URL =
  {http://www.acm.org/pubs/articles/proceedings/stoc/225058/p693-ferragina/p693-ferragina.pdf},
  keywords = {out-of-core algorithm, parallel I/O, pario-bib}
}