The case-law standard is called ECLI. It's used in a few countries and being rolled out in more. At least one Dutch news paper uses ECLI when referring to court cases.
Currently work is underway to publish law as XML and RDF with ODF/PDF/HTML as secondary formats. This will allow embedding of data such as property lines, lists of medicines, reusable financial reports.
https://en.wikipedia.org/wiki/ECLI http://bo-ecli.eu/
Dutch law and government publications are available as XML and ODF.
The constitution: http://wetten.overheid.nl/BWBR0001840/2008-07-15
A publication about standards: https://zoek.officielebekendmakingen.nl/stcrt-2015-39782.htm...
Each article can be linked and documents referring to each article can be found as well.
For example all known documents that link to article 5 (equality) of the constitution:
http://linkeddata.overheid.nl/embedded/portal/spiegel-lijstw...
The links are available as RDF.
Currently work is underway to publish law as XML and RDF with ODF/PDF/HTML as secondary formats. This will allow embedding of data such as property lines, lists of medicines, reusable financial reports.