"Human Readability". Date and Time on the Internet: Timestamps. 2002. sec. 5.2. doi:10.17487/RFC3339. RFC 3339. https://datatracker.ietf.org/doc/html/rfc3339#section-5.2
"OCR and Human readable representation of data on postal items, labels and forms". Universal Postal Union. Archived from the original on 2007-07-16. https://web.archive.org/web/20070716234547/http://www.upu.int/document/2005/an/cep_gn_ep_4-1/src/d011_ad00_an09_p00_r00.doc
"Human-readable URLs". Plone Foundation. Archived from the original on 2010-03-05. Retrieved 2009-10-01. https://web.archive.org/web/20100305045500/http://plone.org/products/plone/features/3.0/existing-features/human-readable-urls
A Convention for Human-Readable 128-bit Keys. doi:10.17487/RFC1751. RFC 1751. https://datatracker.ietf.org/doc/html/rfc1751