1. Australian Case Document.
http://www.judgments.fedcourt.gov.au/judgments/Judgments/fca/single/2018/2018fca1517
2. Canadian Case Document.
https://www.canlii.org/en/ca/fct/doc/2018/2018fc980/2018fc980.html
3. DSDR.
https://gist.github.com/satomacoto/4248449
4. LSA and LexRank.
https://pypi.python.org/pypi/sumy
5. UK Case Document.
https://www.supremecourt.uk/cases/docs/uksc-2016-0209-judgment.pdf