Reference:
  Author: Todd M Lowe and Sean R Eddy
  Title: "tRNAscan-SE: A program for improved detection of transfer RNA genes in genomic sequence"
  Journal: Nucleic Acids Research
  Year: 1997
  Volume: 25
  Number: 5
  Pages: 955-964
  DOI: 10.1093/nar/25.5.0955
  PMID: 9023104
  URL: http://nar.oxfordjournals.org/content/25/5/0955.abstract
  eprint: http://nar.oxfordjournals.org/content/25/5/0955.full.pdf+html
