[1] An Improved diff3 Format for Changes and Conflicts in Tree Structures.

[2] GNU DiffUtil - Comparing and Merging Files.

[3] Khanna S., Kunal K., Pierce B.C. (2007) A Formal Investigation of Diff3. In: Arvind V., Prasad S. (eds) FSTTCS 2007: Foundations of Software Technology and Theoretical Computer Science. FSTTCS 2007. Lecture Notes in Computer Science, vol 4855. Springer, Berlin, Heidelberg

[4] Schematron QuickFix

[5] Robin La Fontaine and Nigel Whitaker Merge and Graft: Two Twins That Need To Grow Apart