@techreport{Joanis4,
  author = "Eric Joanis",
  title = "Review of the Literature on Aggregation in Natural Language Generation",
  institution = "Department of Computer Science, University of Toronto",
  number = "CSRG-398",
  month = "September",
  year = "1999",
  abstract = "In this paper, we review the significant body of research on aggregation,
              especially in the past decade.  The linguistic phenomena labelled as
              aggregation are distinguished and classified and their use in Natural
              Language Generation is analyzed.  Several systems using aggregation are
              described and used as examples of what can be done, and their
              architectures are compared.  Finally, a chronology of significant
              contributions to aggregation is provided.",
  download = "http://www.cs.toronto.edu/~joanis/Papers/tr-398.pdf"
}