DOIResolver returns a DOI resolver for a given DOI.

EscapeDOI escapes a DOI, i.e.

GetDOIRA returns the DOI registration agency for a given DOI or prefix.

IsRogueScholarDOI checks if a DOI is from Rogue Scholar.

NormalizeDOI normalizes a DOI.

PrefixFromUrl extracts DOI prefix from URL.

ValidateDOI validates a DOI.

ValidatePrefix validates a DOI prefix for a given DOI.