References
Reference NO 1
http://genomebiology.com/2007/8/2/R18
Reference NO 2
http://www.ncbi.nlm.nih.gov/pubmed/17284312
Reference NO 3
http://www.biomedcentral.com/1471-2164/13/339
Reference NO 4
http://rsbl.royalsocietypublishing.org/content/4/6/758.full
Reference NO 5
http://mbe.oxfordjournals.org/content/early/2013/04/05/molbev.mst066.abstract
Reference NO 6
http://mbe.oxfordjournals.org/content/early/2013/05/13/molbev.mst066.full
Reference NO 7
http://www.sciencedirect.com/science/article/pii/S0769262584800288
Reference NO 8
http://www.informatics.jax.org/silver/chapters/5-3.shtml