Reference:
  Author: Daniel Glez-Peña and Daniel Gómez-Blanco and Miguel Reboiro-Jato and Florentino Fdez-Riverola and David Posada
  Title: "ALTER: program-oriented conversion of DNA and protein alignments"
  Journal: Nucl. Acids Res.
  Year: 2010
  Volume: 38
  Number: suppl 2
  Pages: W14-W18
  DOI: 10.1093/nar/gkq321
  PMID: 20439312
  URL: http://nar.oxfordjournals.org/content/38/suppl_2/W14
  eprint: http://nar.oxfordjournals.org/content/38/suppl_2/W14.full.pdf+html
