olemus
andmeüksus autentimissüsteemides,
parooli või muu pääsuteabe uuendamise taotlemiseks
= a data unit in authentication systems for requesting the update of a password or other access information

ülevaateid
https://stackoverflow.com/questions/38986005/what-is-the-purpose-of-a-refresh-token

https://pragmaticwebsecurity.com/files/talks/introductionoauth.pdf

https://pragmaticwebsecurity.com/articles/oauthoidc/refresh-token-protection-implications.html

standardid
https://tools.ietf.org/html/rfc6749#page-10 (1.5)