%% You should probably cite rfc7912 instead of this I-D. @techreport{melnikov-mmhs-authorizing-users-02, number = {draft-melnikov-mmhs-authorizing-users-02}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-melnikov-mmhs-authorizing-users/02/}, author = {Alexey Melnikov}, title = {{Draft and Release using Internet Email}}, pagetotal = 9, year = 2013, month = oct, day = 16, abstract = {This document describes a procedure for when an Military Message Handling System (MMHS) message is composed by one user and is only released to the mail transfer system when one or more authorizing users authorize release of the message by adding the MMHS- Authorizing-Users header field. The resulting message can be optionally countersigned, allowing recipients to verify both the original signature (if any) and countersignatures.}, }