Reference:
 - Author: Robert C. Edgar
   Title: "MUSCLE: multiple sequence alignment with high accuracy and high throughput"
   Journal: Nucleic Acids Research
   Year: 2004
   Volume: 32
   Number: 5
   Pages: 1792-1797
   DOI: 10.1093/nar/gkh340
   PMID: 15034147
   URL: http://nar.oxfordjournals.org/content/32/5/1792
   eprint: http://nar.oxfordjournals.org/content/32/5/1792.full.pdf+html
 - Author: Robert C. Edgar
   Title: "MUSCLE: a multiple sequence alignment method with reduced time and space complexity"
   Journal: BMC Bioinformatics
   Year: 2004
   Volume: 19
   Number: 5
   Pages: 113
   DOI: 10.1186/1471-2105-5-113
   PMID: 15318951
   URL: http://www.biomedcentral.com/1471-2105/5/113
   eprint: http://www.biomedcentral.com/content/pdf/1471-2105-5-113.pdf
