1. FTP Site for Genomes in NCBI. https://ftp.ncbi.nih.gov/genomes
2. International Committee on Taxonomy of Viruses (ICTV). https://talk.ictvonline.org/
3. National Center for Biotechnology Information(NCBI). http://www.ncbi.nlm.nih.gov/
4. NCBI Web BLAST (Basic Local Alignment Search Tool. https://blast.ncbi.nlm.nih.gov/Blast.cgi
5. RepeatMasker. http://www.repeatmasker.org/