Dawson and Stenerson. Internet Calendaring and Scheduling Core Object Specification (iCalendar). RFC. 2445. November 1998.

Silverberg, Mansour, Dawson, and Hopson. iCalendar Transport-independant Interoperability Protocol (iTIP). RFC. 2446. November 1998.

Dawson, Mansour, and Silverberg. iCalendar Message-Based Interoperability Protocol (iMIP). , RFC. 2447. November 1998.

Mansour, Royer, Babics, and Hill. Calendar Access Protocol (CAP). ,