Reference

The reference part needs just enough information to uniquely identify the paper. This is the main author name, title of the paper, and year it was published.

Definition:

<reference> -> {
  "author": <free-text>,
  "title": <free-text>, 
  "year": <free-integer>
}

Example:

"reference": {
  "author": "Iglesias et al.",
  "title": "Time-activity footprints in IP traffic",
  "year": 2016
}