“RFC4301: Security Architecture for the Internet Protocol”. Network Working Group of the IETF.p.4(2005年12月).2020年10月27日閲覧。“The spelling "IPsec" is preferred and used throughout this and all related IPsec standards. All other capitalizations of IPsec [...] are deprecated.”
David Adrian; Karthikeyan Bhargavan; Zakir Durumeric; Pierrick Gaudry; Matthew Green; J. Alex Halderman; Nadia Heninger; Drew Springall; Emmanuel Thomé; Luke Valenta; Benjamin VanderSloot; Eric Wustrow; Santiago Zanella-Béguelin; Paul Zimmermann (October 2015). Imperfect Forward Secrecy: How Diffie-Hellman Fails in Practice(PDF). 22nd ACM Conference on Computer and Communications Security (CCS ’15). デンバー. 2016年6月15日閲覧.