1 files changed, 10 insertions, 1 deletions
diff --git a/bubger.1 b/bubger.1
index 68e3219..77f93fa 100644
--- a/bubger.1
+++ b/bubger.1
@@ -1,4 +1,4 @@
-.Dd April 13, 2020
+.Dd April 14, 2020
 .Dt BUBGER 1
 .Os
 .
@@ -122,6 +122,15 @@ Rendered Atom, HTML and mboxrd files for each thread.
 .Bl -item
 .It
 .Rs
+.%A E. Levinson
+.%T Content-ID and Message-ID Uniform Resource Locators
+.%I IETF
+.%N RFC 2392
+.%D August 1998
+.%U https://tools.ietf.org/html/rfc2392
+.Re
+.It
+.Rs
 .%A M. Crispin
 .%T INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1
 .%I IETF