[1] [CITE@en[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, [TIME[2015-04-13 09:29:33 +09:00]] 版)
<http://www.itu.int/rec/T-REC-X.660-201107-I/en>

[2] [CITE@en[draft-larmouth-oid-iri-04 - An IRI/URI Namespace for International Object Identifiers (OIDs)]] ([TIME[2017-04-28 18:35:25 +09:00]]) <https://tools.ietf.org/html/draft-larmouth-oid-iri-04>

[3] [CITE@en[openssl/objects.txt at master · openssl/openssl]]
([TIME[2018-08-14 00:20:45 +09:00]])
<https://github.com/openssl/openssl/blob/master/crypto/objects/objects.txt>