RFC ドキュメントRFC 6961 - The Transport Layer Security (TLS) Multiple Certificate Status Request Extension6.2. 参考情報6.2. Informative References (参考情報) [RFC2560] Myers, M., Ankney, R., Malpani, A., Galperin, S., and C. Adams, "X.509 Internet Public Key Infrastructure Online Certificate Status Protocol - OCSP", RFC 2560, June 1999.