Reference:
  Author: Daehwan Kim and Ben Langmead and Steven L Salzberg
  Title: "HISAT: a fast spliced aligner with low memory requirements"
  Journal: Nature Methods
  Year: 2015
  Volume: 12
  Number: 4
  Pages: 357-360
  DOI: 10.1038/nmeth.3317
  URL: http://dx.doi.org/10.1038/nmeth.3317
