diff --git a/xep.ent b/xep.ent
index 3d3ec22d..4c7a730f 100644
--- a/xep.ent
+++ b/xep.ent
@@ -526,10 +526,12 @@ THE SOFTWARE.
 <!ENTITY rfc4848 "<span class='ref'><link url='http://tools.ietf.org/html/rfc4848'>RFC 4848</link></span> <note>RFC 4848: Domain-Based Application Service Location Using URIs and the Dynamic Delegation Discovery Service (DDDS) &lt;<link url='http://tools.ietf.org/html/rfc4848'>http://tools.ietf.org/html/rfc4848</link>&gt;.</note>" >
 <!ENTITY rfc4854 "<span class='ref'><link url='http://tools.ietf.org/html/rfc4854'>RFC 4854</link></span> <note>RFC 4854: A Uniform Resource Name (URN) Namespace for Extensions to the Extensible Messaging and Presence Protocol (XMPP) &lt;<link url='http://tools.ietf.org/html/rfc4854'>http://tools.ietf.org/html/rfc4854</link>&gt;.</note>" >
 <!ENTITY rfc4880 "<span class='ref'><link url='http://tools.ietf.org/html/rfc4880'>RFC 4880</link></span> <note>RFC 4880: OpenPGP Message Format &lt;<link url='http://tools.ietf.org/html/rfc4880'>http://tools.ietf.org/html/rfc4880</link>&gt;.</note>" >
+<!ENTITY rfc5023 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5023'>RFC 5023</link></span> <note>RFC 5023: The Atom Publishing Protocol &lt;<link url='http://tools.ietf.org/html/rfc5023'>http://tools.ietf.org/html/rfc5023</link>&gt;.</note>" >
 <!ENTITY rfc5122 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5122'>RFC 5122</link></span> <note>RFC 5122: Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP) &lt;<link url='http://tools.ietf.org/html/rfc5122'>http://tools.ietf.org/html/rfc5122</link>&gt;.</note>" >
 
 <!-- Internet-Drafts -->
 
+<!ENTITY atomsub "<span class='ref'><link url='http://www.xmpp.org/internet-drafts/draft-saintandre-atompub-notify-06.html'>Atomsub: Transporting Atom Notifications over the Publish-Subscribe Extension to the Extensible Messaging and Presence Protocol (XMPP)</link></span> <note>&lt;<link url='http://www.xmpp.org/internet-drafts/draft-saintandre-atompub-notify-06.html'>http://www.xmpp.org/internet-drafts/draft-saintandre-atompub-notify-06.html</link>&gt;. Work in progress.</note>" >
 <!ENTITY dnssd "<span class='ref'><link url='http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt'>DNS-Based Service Discovery</link></span> <note>DNS-Based Service Discovery &lt;<link url='http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt'>http://files.dns-sd.org/draft-cheshire-dnsext-dns-sd.txt</link>&gt;. Work in progress.</note>" >
 <!ENTITY geoprivpol "<span class='ref'><link url='http://tools.ietf.org/html/draft-ietf-geopriv-policy'>Geopriv Policy</link></span> <note>Geopriv Policy &lt;<link url='http://tools.ietf.org/html/draft-ietf-geopriv-policy'>http://tools.ietf.org/html/draft-ietf-geopriv-policy</link>&gt;. Work in progress.</note>" >
 <!ENTITY iax "<span class='ref'><link url='http://tools.ietf.org/html/draft-guy-iax'>IAX</link></span> <note>IAX: Inter-Asterisk eXchange Version 2 &lt;<link url='http://tools.ietf.org/html/draft-guy-iax'>http://tools.ietf.org/html/draft-ietf-guy-iax</link>&gt;. Work in progress.</note>" >