A Digital Object Identifier (DOI) is a unique alphanumeric string that identifies content and provides a persistent link to its location on the Internet
Technically, a DOI is a registered URI (Uniform Resource Identifier) within the info-URI namespace (IETF RFC 4452)
Most scientific publications nowadays are identified by a DOI
To resolve a DOI, one may either go to https://dx.doi.org or directly obtain the URL by appending the DOI to the https://dx.doi.org string
