[1] Overlap, Containment and Dominance. URN: "http://www.jenitennison.com/2008/12/06/overlap-containment-and-dominance.html"

[2] Modeling overlapping structures, Yves Marcoux, Michael Sperberg-McQueen, Claus Huitfeldt, URN: "http://www.balisage.net/Proceedings/vol10/html/Marcoux01/BalisageVol10-Marcoux01.html"

[3] Markup Overlap: A Review and a Horse, Steven DeRose, URN: "http://conferences.idealliance.org/extreme/html/2004/DeRose01/EML2004DeRose01.html"

[4] Multiple hierarchies: new aspects of an old solution, Andreas Witt, URN: "http://conferences.idealliance.org/extreme/html/2004/Witt01/EML2004Witt01.html" />

[5] Representation of overlapping structures, Michael Sperberg-McQueen, URN: "http://conferences.idealliance.org/extreme/html/2007/SperbergMcQueen01/EML2007SperbergMcQueen01.html"

[6] TEI: Text Encoding Initiative, URN: "http://www.tei-c.org/index.xml"

[7] OASIS Darwin Information Typing Architecture (DITA) TC, URN: "https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dita"

[8] OASIS DocBook TC, URN: "https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=docbook" />

[9] Schmidt, Desmond. “Merging Multi-Version Texts: a Generic Solution to the Overlap Problem.” Balisage Series on Markup Technologies, vol. 3 (2009), URN: "http://www.balisage.net/Proceedings/vol3/html/Schmidt01/BalisageVol3-Schmidt01.html"

[10] Overlapping Hierarchies in DeltaV2 Format , URN: "http://www.deltaxml.com/support/documents/deltav21"

[11] Two and Three Document DeltaV2 Format (patent pending), URN: "http://www.deltaxml.com/support/documents/deltav2"

[12] La Fontaine, Robin, "Representing Overlapping Hierarchy as Change in XML", Presented at Balisage: The Markup Conference 2016, Washington, DC, August 2 - 5, 2016, URN: "https://doi.org/10.4242/BalisageVol17.LaFontaine01"