Textual Encodings of PKIX, PKCS, and CMS Structures. - Simon Josefsson; Sean Leonard (RFC, 2015)

The text/markdown Media Type. - Sean Leonard (RFC, 2016)

Guidance on Markdown: Design Philosophies, Stability Strategies, and Select Registrations. - Sean Leonard (RFC, 2016)

Windows Image Media Types. - Sean Leonard (RFC, 2016)

The PKCS #8 EncryptedPrivateKeyInfo Media Type. - Sean Leonard (RFC, 2018)