%% You should probably cite draft-ietf-calext-eventpub-extensions instead of this I-D. @techreport{douglass-calendar-extension-03, number = {draft-douglass-calendar-extension-03}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-douglass-calendar-extension/03/}, author = {Mike Douglass}, title = {{Event Publishing Extensions to iCalendar}}, pagetotal = 22, year = 2013, month = jun, day = 5, abstract = {This specification introduces a number of new iCalendar properties which are of particular use for event publishers and in social networking.}, }