[1] X.660 : Information technology - Procedures for the operation of object identifier registration authorities: General procedures and top arcs of the international object identifier tree (tsbmail 著, 版) <http://www.itu.int/rec/T-REC-X.660-201107-I/en>
[2] draft-larmouth-oid-iri-04 - An IRI/URI Namespace for International Object Identifiers (OIDs) () <https://tools.ietf.org/html/draft-larmouth-oid-iri-04>
[3] openssl/objects.txt at master · openssl/openssl () <https://github.com/openssl/openssl/blob/master/crypto/objects/objects.txt>