1. GumTreeDiff 2016. https://github.com/GumTreeDiff/. GumTreeDiff 2016. https://github.com/GumTreeDiff/.
2. Jenkins 2016. https://github.com/jenkinsci/jenkins. Jenkins 2016. https://github.com/jenkinsci/jenkins.
3. JSync 2016. https://sites.google.com/site/ nguyenanhhoan/JSync4Public.zip. JSync 2016. https://sites.google.com/site/ nguyenanhhoan/JSync4Public.zip.
4. Tree Edit Distance Problems: Algorithms and Applications to Bioinformatics