%% You should probably cite rfc7529 instead of this I-D. @techreport{ietf-calext-rscale-00, number = {draft-ietf-calext-rscale-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-calext-rscale/00/}, author = {Cyrus Daboo and Gregory Yakushev}, title = {{Non-Gregorian Recurrence Rules in iCalendar}}, pagetotal = 15, year = 2014, month = oct, day = 4, abstract = {This document defines how non-Gregorian recurrence rules can be specified and used in iCalendar data, and with CalDAV servers.}, }