BLAST® Help [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2008-. Available from: http://www.ncbi.nlm.nih.gov/books/NBK1762/ BMC Bioinformatics. 2009 Dec 15;10:421. BLAST+: architecture and applications. Camacho C, Coulouris G, Avagyan V, Ma N, Papadopoulos J, Bealer K, Madden TL. Source